Carl Morten Motzfeldt Laane

• Jalal, Marwa; Wojewodzic, Marcin; Laane, Carl Morten Motzfeldt & Hessen, Dag Olav (2013). Large Daphnia at lower temperature: a role for cell size and genome configuration? Genome. ISSN 0831-2796. 56, s. 511–519. doi: 10.1139/gen-2013-0004.
• Hegge, Anne Bee; Mysterud, Ivar; Karlsen, Jan; Skulberg, Olav Magnus; Laane, Carl Morten Motzfeldt & Schumacher, Trond [Vis alle 7 forfattere av denne artikkelen] (2013). Impaired secondary oxidant deactivation capacity and enhanced oxidative stress in serum from alveld affected lambs. Journal of Photochemistry and Photobiology. B: Biology. ISSN 1011-1344. 126, s. 126–134. doi: 10.1016/j.jphotobiol.2013.07.005.
• Tønnesen, Hanne Hjorth; Mysterud, Ivar; Karlsen, Jan; Skulberg, Olav Magnus; Laane, Carl Morten Motzfeldt & Schumacher, Trond (2013). Identification of singlet oxygen photosensitizes in lambs drinking water in an alveld risk area in West Norway. Journal of Photochemistry and Photobiology. B: Biology. ISSN 1011-1344. 119, s. 37–45. doi: 10.1016/j.jphotobiol.2012.12.003. Vis sammendrag

  Alveld is a hepatogenous photosensitivity disorder in lambs. Although alveld has been known in Norway for more than 100 years, there are still questions related to the cause of the disease. Phytoporphyrin has long been incriminated as the photosensitizer in hepatogenous photosensitivity diseases but previous findings suggest that the photosensitizing mechanism in alveld is more complex, possibly involving other co-factors. The current work investigates the presence of non-hepatogenous photosensitizers originating in lamb’s drinking water from various sources. In addition samples of two of the predominent cyanobacteria found in a representative biofilm (i.e. aggregates of microbes) were identified and isolated in axenic (i.e. pure) cultures. Information from the absorption-, fluorescence emission-, and -excitation spectra and the action spectrum for the formation of singlet oxygen was combined in order to identify the chromophores responsible for the formation of singlet oxygen, e.g. phycocyanins from the cyanobacteria. The highest level of singlet oxygen formation was detected in lotic (i.e. flowing) water in the period consistent with the outbreak of the alveld disease in the area. Meteorological data indicate a warm and wet May with a high radiation exposure leading up to a colder and wet June with an even higher solar irradiance. The seasonal variation in the amount of photosensitizers in lamb’s drinking water combined meteorological data can be important to predict the outbreak of alveld.

• Tønnesen, Hanne Hjorth; Mysterud, Ivar; Karlsen, Jan; Skulberg, Olav Magnus; Laane, Carl Morten Motzfeldt & Schumacher, Trond (2010). Detection of singlet oxygen in blood serum samples of clinically healthy lambs and lambs suffering from alveld disease. Veterinary research communications. ISSN 0165-7380. 34(4), s. 347–357. doi: 10.1007/s11259-010-9362-9.
• Størmer, Fredrik C. & Laane, Carl Morten Motzfeldt (2009). Er hukommelsen lagret i magnetittkrystaller? Biolog. ISSN 0801-0722. 27(3).
• Mysterud, Ivar & Laane, Carl Morten Motzfeldt (2008). Blågrønnbakterier og "svarte hull" i alveldland. Biolog. ISSN 0801-0722. 26(1). Vis sammendrag

  Artikkelen beskriver giftproduserende blågrønnbakterier som mulig cofaktor til sykdommen "alveld" hos sau. Sykdommen karakteriseres blant annet ved fotosensibilisering og har stor letalitet. Årsaksforholdene er ikke ordentlig utredet og oppklarte.

• Laane, Carl Morten Motzfeldt (2007). The use of webcams in microscopy. Infocus Magazine. ISSN 1365-3067. 5, s. 42–54. Vis sammendrag

  Some modern webcams may easily be adapted to classic microscopes and produce high-quality images or digital video with professional quality at a remarkable low cost. This article describes how this can be done in a simple manner. A number of the included color photomicrographs show that in many instances equal results are obtained with much less effort than using modern and professional high-cost instruments.

• Campbell, Carmen; Laane, Carl Morten Motzfeldt; Haugarvoll, Erlend & Giaever, Ivar (2007). Monitoring Viral Induced Cell Death using Electric Cell-Substrate Impedance Sensing. Biosensors & bioelectronics. ISSN 0956-5663. 23(4), s. 536–542. Vis sammendrag

  Using Electric Cell-Substrate Impedance Sensing (ECIS) we have recorded the dynamics of viral infections in cell culture. Cells were cultured on small gold electrodes where the measured impedance mirrors changes in attachment and morphology of cultured cells. Viral infection inducing cytopatic effects results in dramatic impedance changes, which are mainly due to cell death. In the current study two different fish cell lines have been used: chinook salmonid embryonic cells (CHSE-214) infected with infectious pasncreatic necrosis virus (IPNV) and epithelioma papulosum cyprini (EPC) carp cells infected with infectious hematopoetic necrosis virus (IHNV). The impedance changes caused by cell response to virus are easily measured and converted to resoistance and capacitance. An approximate linear correlation between log of viral titer and time of cell death was found.

• Haugarvoll, Erlend; Thorsen, Jim; Laane, Carl Morten Motzfeldt; Huang, Qirong & Koppang, Erling (2006). Melanogenesis and evidence for melanosome transport to the plasma membrane in a CD83+ teleost leucocyte cell line. Pigment Cell Research. ISSN 0893-5785. 19(3), s. 214–225. doi: 10.1111/j.1600-0749.2006.00297. Vis sammendrag

  Visceral organs of ectothermic vertebrates harbour melanin-containing leucocytes termed melanomacrophages. These cells are thought to participate in immune reactions and free-radical trapping. In teleosts, the melanin producing ability of melanomacrophages has hitherto not been confirmed by molecvular techniques. Here, a leucocyte marker and the apparatus for melanocyte production and transport were investigated in the Atlantic salmon (Salmon salar) pronephros-derived mononuclear leucocyte (SHK-1) cell line. The SHK-1 cells expressed transcripts specific for a mammalian CD83 homologue, a standard surface marker for activated or differentiated dendritic cells, and dopachrome tautomerase/tyrosinase-related protein-2, a melanocyte specific enzyme essential for melanin production. Reduction potential of melanin or its precursors was demonstrated histochemically after prolonged cultivation. Ultrastructural investigations revealed tyrosinase and acid phosphate activity in identical organelles and BSA-gold colocalized with multilamellar melanosomes after 2h internalization. Apparently, melanosomes were transported and released through periodically occuring tubules fusing with the plasma membrane. Video monitoring revealed filopodia and macropinocytosis. These results show that the SHK-1 cell line is capable of melanogenesis and melanosome secretion. Melanin producing cells in teleost pronephros may represent a distinct CD83+ leucocyte population consisting of phologenetically relict multifunctional cells. This is the first report of a melanin-producing leucocyte cell-line.

• Laane, Carl Morten Motzfeldt (2006). Ein einfaches Mikroskopiesystem für Zeitrafferaufnahmen lebender Zellen. Mikrokosmos (Stuttgart). ISSN 0026-3680. 95(5), s. 310–316. Vis sammendrag

  Hochwertige Zeitraffermikroskopie lebender Zellen erfordert normalerweise für Amateure unerschwingliche Geräte. Die kosten für solche Aufnahmen können auch ein Problem für professionelle Wissenschaftler sein. Seit einiger Zeit ermöglichen jedoch digitaltechnische Entwicklungen, videos von Zellbewegungen und Zellverhalten bei niedrigen Kosten und mit nur wenigen technischen Problemen aufzunehmen. Hier beschribe ich ein für diese Zwecke mit einer gängigen Webkamera ausgestattetes Mikroskopsystem, das sich über einen Zeitraum von 3 Jahren in Lehre und Forschung bewährt hat. Über 500 kleinere Videos einer Vielzahl lebender Organismen wurden bereits damit gemacht, unter anderem detaillierte Studien von Baakterien, einiger Protozoen sowie Zellen von Pflanzen, Tieren und Menschen. Mit dem System was er sogar möglich, die Bewegungen und Teilungen von Zellorganellen wie Mitochondrien und Pigmentkörpern ("Melanosomen") zu verfolgen.

• Høiland, Klaus; Laane, Carl Morten Motzfeldt & Medbø, Jon Ingulf (2004). Multivariate analyses of materials found on a sentenced man and on the scene of the crime. Law, Probability and Risk. ISSN 1470-8396. 3(1), s. 193–209. Vis sammendrag

  In 1957 a girl was brutally murdered in Oslo,Norway, and a 23 year old man , who claimed to be innocent,was sentenced for the crime. To examine that claim, materials collected at various locations on the scene of the crime and on the garments of the sentenced man have been reanalyzed using two multivariate techniques, namely cluster analysis and ordination by detrended correspondence analysis (DCA). The cluster analysis divided the different locations in three: one group with locations from the sentenced man, one group for related locations from the scene of the crime, and finally locations with little associations with other locations. The main axis of the DCA largely separated the locations so that those on the sentenced man had a low loading while locations on the scene of the crime had a high loading; there was little overlap between the two set of locations. In further simulations materials found on the scene of the crime were scored for being present on a shoe belonging to the sentenced man. This procedure increased the loading of the shoe on the main axis and drew the location away from the other locations on the sentenced man and towards those at the scene of the crime. This simulation thus suggests that DCA may be a sensitive method for unravelling a possible association between a suspect and the scene of the crime. This study shows no association between the sentenced man and the scene of the crime.

• De Blasio, Birgitte Freiesleben; Laane, Carl Morten M; Walmann, Thomas & Giæver, Ivar (2004). Combining optical and electrical impedance techniques for quantitative measurement of confluence in MDCK-I cell cultures. BioTechniques. ISSN 0736-6205. 36, s. 650–+. Vis sammendrag

  A new method combining optical and electrical impedance measurements is described that enables submicroscopical cell movements to be monitored. The cells are grown on small gold electrodes that are transparent to light. This modified electrical cell-substrate impedance sensor (ECIS) allows simultaneous microscopic recording of both growth and motility; thus enabling cell confluence on the electrodes to be systematically correlated to the impedance in regular time intervals of se4conds and for extended periods of time. Furthermore the technique provides en independent measure of monolayer cell densities that we compare to calculated values from a theoretical model. We have followed the attachment and spreading behaviour of epithelial Madin-Darby canine kidney strain I (MDCK-I) cell sultures on microelectrodes for up to 40h. The studies reveal a high degree of correlation between the measured resistance at 4 kHZ and the corresponding cell confluence in 4- to 6-h intervals with typical linear cross-correlation factors of r equaling approximately 0.9. In summary the impedance measured with the ECIS technique provides a good quantitative measure of cell confluence.

• Høiland, Klaus & Laane, Carl Morten Motzfeldt (2003). En kritisk vurdering av grannåler som bevis i straffesaken mot Fredrik Fasting Torgersen i 1958. Blyttia : Norsk botanisk forenings tidsskrift. ISSN 0006-5269. 61(2), s. 90–98. Vis sammendrag

  Mr. Fredrik Fasting Torgersen (23 yr) was 16th June 1958 by Eidsivating Crown Court sentenced for murder of Miss Rigmor Johnsen (16 yr) 6th December 1957 in Skippergata 6b in Oslo. An important botanical circumstantial evidence was needles of Norway spruce Picea abies found on an old Christmas tree on the scene of the crime and in the pocket and turn-ups on Torgersen?s suit. During the trial it was stated that the needles from the scene of the crime and the accused were identical in size and form, and that such needles are exceptionally rare. From both places they were short (6-9 mm), flattened, and tapering with an acute point. The needles from the scene of the crime are still available for study, whereas those from the accused unfortunately are lost. However, we found that needles of corresponding size and form are common on small and suppressed spruce trees in shady forests. Moreover, nearly all needles of suppressed trees are homogenous, indicating that clothes coming in touch with such trees will contain needles of approximately the same size and form. Therefore we disagree with the view that the spruce needles used against Torgersen were exceptional and conclude that they had no value as circumstantial evidence in the actual criminal case. Torgersen has always claimed and still claims his innocence.

• Laane, Carl Morten Motzfeldt & Høiland, Klaus (1999). Uttalelse i forbindelse med Fasting Torgersensaken. I Moss, E. & Eide, C.J. (Red.), ... aldri mer slippes løs. Historien om Fredrik Fasting Torgersen. Pax Forlag A/S, Oslo..
• Nordal, Inger & Laane, Carl Morten Motzfeldt (1996). Taxonomic delimitation within Cochlearia officinalis s.lat. with particular discussion on the rank of C.anglica (Brassicaceae). Acta Universitatis Upsaliensis Symbolae Botanicae Upsalienses. ISSN 0372-4654. 31(3), s. 47–57. Vis sammendrag

  Based on evidence from chromosome cytology, morphology and eco-geography a new taxonomic delimitation is proposed within Cochlearia officinalis s.lat. A polyploid series of geographically vicariant taxa, ecologically adapted to estuaries and sheltered beaches, includes C.officinalis ssp. aestuaria comb.nov. on diploid level, C.officinalis ssp. norvegica on tetraploid level, and C. officinalis ssp.anglica on octoploid (rarely decaploid) level. The rank of subspecies rather than the species is justified by the close morphological resemblance, interfertility, and the probable autopolyploid origin of the polyploids within the series. Cochlearia officinalis L.ssp. aestuaria (Loyd) Nordal & Laane comb. nov.

• Laane, Carl Morten Motzfeldt & Pedersen, Morten Paul (1995). Plasma in Bewegung Sichtbarmachung plasmatischer Bewegungsmuster bei Physarum polycephalum (TeilII). Mikrokosmos (Stuttgart). ISSN 0026-3680. 84(6), s. 357–363. Vis sammendrag

  Ein wesentliches Characteristikum der azellularen Schleimpilze ist die Pendelströmung des Cytoplasmas. Auf äussere Stimuli antwortet der Organismus mit Veränderungen in der Oszillation der Strömung.

• Halvorsrud, Ragnhild; Laane, Carl Morten Motzfeldt & Giaever, Ivar (1995). A novel method to study plasmodial contractions in Physarum. Synchrony and temperature dependence. Biological rhythm research. ISSN 0929-1016. 26, s. 316–330. Vis sammendrag

  A novel electrical method for measuring the contraction rhythm occuring in Physarum polycephalum is described. The plasmodium is cultured in a dish containing two separated chambers, and when bridging the two chambers the plasmodial veins of the Physarum complete an electrical circuit. The method is well suited for in situ measurements of the overall contraction rhythm in Physarum over long time periods. The method has been used to investigate the temperature dependence of the observed oscillations in the range from 1 to 30 o C. The period exceeds 10 minutes at 1 o C. By using discs with several separated chambers , the synchrony in a single plasmodium or the fusion between two specimens can be observed. A simple model calculation explains the salient features of the method and gives a good description of the results.

• Halvorsrud, Ragnhild; Giaever, Ivar & Laane, Carl Morten Motzfeldt (1995). Patterns of oscillations during mitosis in plasmodia of Physarum polycephalum. Protoplasma. ISSN 0033-183X. 188, s. 12–21.
• Laane, Carl Morten Motzfeldt & Pedersen, Morten Paul (1995). Plasma in Bewegung. sichtbarmachung plasmatischer Bewegungsmuster bei Physarum polycephalum (Teil 1). Mikrokosmos (Stuttgart). ISSN 0026-3680. 84, s. 287–290. Vis sammendrag

  Chromosomenuntersuchungen sind fast ohne apparativen Aufwand möglich; sie eignen sich daher auch für Arbeiten des Amateurs und für die Schulbiologie. Ein fast ideales Objekt ist die ein wenig aus der Mode gekommene Zimmerpflanze Tradescantia (Ampelpflanze). Sie ist sehr leicht zu ziehen, besitzt grosse Chromosomen und blüht im Frühjahr und Sommer sehr reich. Unreife Staubgefässe zur Untersuchung der Meiose lassen sich daher in grösserer Zahl gewinnen. In dem Bericht wird vor allem auf polyploide Stämme der Tradescantia virginiana hingewiesen.

• Laane, Carl Morten Motzfeldt & Høiland, Klaus (1994). Masivedel, en endem från postglacial tid. Svensk Botanisk Tidskrift. ISSN 0039-646X. 88, s. 199–212. Vis sammendrag

  Oxytropis deflexa (Pall.)DC. occurs in three disjunct areas, viz. in Asia, North America, and Europe. In Europe it is represented only by subsp. norvegica Nordh., which grows in scree slopes at two sites in Finnmark, northern Norway. A total of less than 500 specimens occur in areas totally comprising a few hectars. The nearest localities for the species (in Asia) are about 4000 km apart. We have examined the morphology, growth behaviour and cytogenetics of cultivated plants from the three main areas of the species. Asian and American plants have a normal meiosis, and a high fertility. Investigated plants of subsp. norvegica had severe disturbances of meiosis, and the seed-setting during natural conditions is poor in many specimens. Nevertheless, sufficient amounts of seed is produced to maintain the populations, but they are on the verge of extinction. They probably consist of a limited number of genetical lines with varying degrees of meiotic break-down. The morphological and genetical changes are moderate and they can have developed during the post-glacial period, probably due to mutations and extensive inbreeding.

• Halvorsrud, Ragnhild; Giaever, Ivar; Laane, Carl Morten Motzfeldt; Feder, Jens Gottfried & Jøssang, Torstein Fossan (1993). Variations in the biological clock of the slime mold Physarum polycephalum measured electrically. Journal of interdisciplinary cycle research. ISSN 0022-1945. 24, s. 81–89. Vis sammendrag

  In the plasmodial stage the slime mold Physarum polycephalum exhibits oscillatory phenomena. The ectoplasm contracts regularly, resulting in oscillatory (shuttle) streaming of the endoplasm. This periodic phenomenon represents a biological clock that is not well understood. We have studied quantitatively the stability of the rhythmic contractions in Physarum over long intervals of time using an electrical method that permits in situ measurements of the undisturbed plasmodium. The measured resistance curves were analyzed with fast Fourier transform, and the power spectra revealed one fundamental frequency with several higher harmonics. The period determined from the fundamental frequency (typical 1.8 minutes) was quite stable over 40 hours at defined temperature, humidity and growth conditions, but deviations by a factor of 2 occurred on shorter time scales. The period of different Physarum specimens varied from 1 to 6 minutes at room temperature.

• Laane, Carl Morten Motzfeldt & Halvorsrud, Ragnhild (1993). Plasmaströmungen und Zelloszillationen im Schleimpilz Physarum polycephalum. Mikrokosmos (Stuttgart). ISSN 0026-3680. 82(1), s. 50–58. Vis sammendrag

  Das Plasmodium des Schleimpilzes Physarum polycephalum ist ein faszinierendes Modellsystem zur Untersuchung von Strömungsvorgangen im Cytoplasma. Diese auffälligen Plasmaströmungen, die der Mikroskopiker grundsätzlich auch in vielen anderen Zellen beobachten kann, werden von Proteinen gesteuert, die in Aufbau und Leistung den Funktionsproteinen der Säugetiermuskeln sehr ähnlich sind. Die Zellbiologen Morten M. Laane und Ragnhild Halvorsrud berichten hier über ihre neueren Untersuchungen an einem sehr merkwürdigen Lebewesen.

• Wold, Jens Kristian; Paulsen, Berit Smestad; Haugli, Tuva; Nordal, Arnold & Laane, Carl Morten Motzfeldt (1992). Increase in thebaine content of Papaver brakteatum Lindl. after colchicine treatment of seeds. Annual fluctuations of the thebaine level of individual plants. Acta Pharmaceutica Nordica. ISSN 1100-1801. 4, s. 31–35. Vis sammendrag

  From colchicine treated seeds of Papaver brakteatum Lindl. some poppy plants were obtained that developed capsules richer in thebaine than the controls. The individual poppies were analyzed for capsule content annually for eight succesive years, the results revealing significant year-to-year differences. One of the poppies, X7, (ca.5% thebaine) developed capsules consisting of partly polyploid tissue during the first and second year. This plant was propagated vegetatively to give a series (the X7 series) of new P.brakteatum plants. The capsule thebaine content of these individuals differed markedly the first two years, whereas the alcaloid production decreased and appeared to level out and reach a value still clearly higher than the controls (mean values 2.3% and 1.3% respectively). From seeds of four of the thebaine-rich poppies of the X-7 series, four new series of P. brakteatum plants were obtained. The capsule thebaine level of these was significantly lower than that of the mother plants.

• Laane, Carl Morten Motzfeldt (1990). Der Schleimpilz Physarum polycephalum. Ein faszinierender Organismus für Biologische Experimente. Mikrokosmos (Stuttgart). ISSN 0026-3680. 79, s. 197–203. Vis sammendrag

  Schleimpilze (Myxomyceten) sind beindrukende Lebeswesen. sie vereinen tierische und pflanzliche Merkmale und wurden daher lange Zeit von den Zoologen als Tiere ("Mycetozoa"), von den Botanikern als Pflanzen betrachtet. Viele Schleimpilze bilden riesige, bis handtellergrosse Plasmamassen (Plasmodien), die sich wie Amöben bewegen und als jeweils einer einzigen , vielkernige Zelle bestehen. Seit mehr als einem halben Jahrhundert dienen diese Risenzellen der Forschung als Modelle. An ihnen wurden wesentliche Erkenntnisse über die Struktur des Cytoplasmas gewonnen. Im Entwicklungszyklus eines Schleimpilzes treten flagellatenartige Stadien auf, einzellige Amöben, vielkernige Plasmodien und Sporen. Die Sporen entstehen in Sporangien und erinnern in der Tat an Pilze.

• Nordal, Inger & Laane, Carl Morten Motzfeldt (1990). Cytology and reproduction in arctic Cochlearia. Sommerfeltia. ISSN 0800-6865. 11, s. 147–158.
• Laane, Carl Morten Motzfeldt (1990). Cyto-genetic problems in the allopolyploid species Paris quadrifolia L. Blyttia : Norsk botanisk forenings tidsskrift. ISSN 0006-5269. 48, s. 73–76. Vis sammendrag

  The chromosomes of Paris quadrifolia L. are among the largest known in the plant kingdom. The chromosome number 2n=20 is characteristic of Norwegian specimens. The karyotype consists of five groups of chromosomes that are easily identified at stages both in mitosis and meiosis. Within each group the two pairs differ slightly in morphology. The karyotype variation makes this species promising for further cyto-genetic studies.

• Paulsen, Berit Smestad; Wold, Jens Krisitian; Laane, Carl Morten Motzfeldt; Haugli, Tuva & Nordal, Arnold (1989). Changes in the thebaine content of Papaver brakteatum Lindl. after colchicine treatment of seeds. Proc.Int.Symp. on New Drug Development from Nat.Products. s. 96–103.
• Laane, Carl Morten Motzfeldt (1989). Sekksporesoppen mosebeger (Neottiella)- et velegnet materiale for cytologiske studier. Blyttia : Norsk botanisk forenings tidsskrift. ISSN 0006-5269. 47, s. 90–96.
• Høiland, Klaus & Laane, Carl Morten Motzfeldt (1987). Flower substances in the extremely disjunct species Oxytropis deflexa and their phytogeographical implications. Canadian Journal of Botany. ISSN 0008-4026. Vis sammendrag

  Oxytropis deflexa (Pall)D.C. is found on a global scale mainly in three disjunct races. This interesting pattern arose probably 10 000 years ago as a result of the termination of the Weichselian glaciation. In Europe the only known growing sites are in Finnmark, North Norway, where fewer than 500 specimens occur on two ecologically characteristic areas comprising a few hectares. The species is known from localities in Asia 5000 km apart and also from North America. By examining the flower substances by thin-layer chromatography and by constructing dendrograms by the UGPMA procedure and using principial-coordinate analysis we found the Norwegian specimens to be chemotaxonomically isolated from the American and the Asian populations. The special floral chemistry found in the Norwegian population probably evolved during postglacial times. Because the Norwegian specimens seems thermophilous, it appears unlikely that the species survived the last glaciation on eventual costal refuges in north Norway, as has been proposed by others. Our findings do not contradict a view that the plant migrated westward from ice-free areas in noth Asia in early postglacfial time. The Oxytropis deflexa group thus allows studies of evolutionary processes that have occurred within a time scale of approximately 10 000 years.

• Laane, Carl Morten Motzfeldt & Høiland, Klaus (1987). Chromosome number and meiosis in herbarium specimens from the extinct Scandinavian population of Crepis multicaulis. Hereditas. ISSN 0018-0661. 105, s. 187–192. Vis sammendrag

  An isolated population of Crepis multicaulis Ledeb. was discovered in Eastern Finnmark, Northern Norway in 1851. The plants were believed to represent a preglacial relict population of great evolutionary and plant geographic interest. Due to unsufficient protection the plants vanished in the beginnings of the 1940-ies. Unfortunately, no chromosome counts or meiotic studies had been undertaken. By simple techniques we have been able to determine the chromosome number and also study meiosis in the original herbarium specimens deposited at the Botanical Museum of the University of Oslo. The haploid chromosome number was n=5. Meiosis proceeded in a mainly regular manner. This is in accordance with recent studies on Soviet material. The implications of these findings are discussed.

• Laane, Carl Morten Motzfeldt; Wold, J. K.; Paulsen, B. S.; Haugli, T. & Nordal, A. (1987). Cytogenetic studies in "X-7", a new line of Papaver bracteatum Lindl. with increased thebaine content. Hereditas. ISSN 0018-0661. s. 187–197. Vis sammendrag

  Papaver bracteatum Lindl. is of substantial medical and pharmaceutical interest as a material for commercial production of codeine. During various experiments, some involving colchicine treatment of seeds, a diploid plant (called "X-7") developed. This plant had a substantial increase in the amounts of thebaine, the main alcaloid produced in the capsules. By cloning this plant, a new series of bracteatum plants were obtained, and the thebaine content of the new individuals varied markedly from 3% to about 17% against normal variation from 1% to 3%. Subsequent cytological analyses revealed the plants to be diploid (2n=14). The karyotype may contain minor structural differences from the mother line, but these were difficult to characterize. Marked differences of meiotic behaviour occurred. The "X-7" line appears to have arisen through diploidization and chromosomal rearrangements from polyploid tissue.

• Nordal, Inger; Eriksen, Aud Else Berglen; Laane, Carl Morten Motzfeldt & Solberg, Y (1986). Biogeographic and biosystematic studies in the genus Cochlearia in northern Scandinavia. Acta Universitatis Upsaliensis Symbolae Botanicae Upsalienses. ISSN 0372-4654. XXVII(2). Vis sammendrag

  In Northern Scandinavia (excluding Bear Island and Spitsbergen) the genus Cochlearia is only represented by forms with 2n=24 and a variable number of B-chromosomes. This means that only one species is present, C.officinalis L. sensu stricto. Ecotypical differentiation has taken place within this species. The glucosinate content indicates that the bird cliff and fountain ecotypes have independent migration history after the last glaciation compared to the beach and estuary ecotypes.

• Nordal, Inger; Laane, Carl Morten Motzfeldt; Holt, Ellen & Staubo, Inger (1985). Taxonomic studies of the genus Hypoxis in East Africa. Nordic Journal of Botany (NJB). ISSN 0107-055X. Vis sammendrag

  East African material of the genus Hypoxis L. has preliminarily been divided into the hetrogenous, probably apomictic H. obtusa Burch. complex (2n=40-50, ca.75, 76, ca.85,>86, ca.92, ca.98, ca.108, 130-135, 160-200) and 5 rather homogenous species: H. angustifolia Lam (2n=14,28), H. goetzei Harms (2n=62), H. kilimanjarics Bak., H.malosana Bak. (2n=14) and H. macrocarpa Holt & Staubo sp.nov. H.kilimanjarica is divided into the ssp. kilimanjarica and ssp. prostrata Holt & Staubo ssp.nov.

• Laane, Carl Morten Motzfeldt & Lie, Thore (1985). Fremstilling av kromosompreparater med enkle metoder. Blyttia : Norsk botanisk forenings tidsskrift. ISSN 0006-5269. 43, s. 7–14. Vis sammendrag

  Kromosomstudier i lavere og høyere plantearter er ofte regnet som et ressurskrevende og vanskelig felt som neppe kan utføres av andre enn profesjonelle forskere. amatører som forsøker å lage gode kromosompreparater støter ofte på tekniske og praktiske problemer. Ikke minst kan studiet av selve preparatene virke komplisert. Slike oppfatninger hindrer derfor mange fra å forsøke seg på et ytterst fascinerende og lærerikt studium av kromosomvariasjon og evolusjonsforhold hos våre ville plantearter. I artikkelen vises hvordan mange av disse problemene kan løses.

• Laane, Carl Morten Motzfeldt (1984). Cytologiske bidrag til forståelse av mikroevolusjon. I Stenseth, Nils Christian & Lie, Thore (Red.), Evolusjonsteorien. Gyldendal Norsk Forlag, Oslo. s. 174–184.
• Andersen, Veslemøy Eva Margrethe; Frøholm, Leif Oddvar & Laane, Carl Morten Motzfeldt (1984). Staining of the bacterial nucleoplasma with the Feulgen fluorescence method. Farbung des Nukleoplasmas von Bakterien mit Hilfe der Feulgen Fluoreszenz-Methode. Mikroskopie Wien Zentralblatt für mikroskopische Forschung und Methodik. ISSN 0026-3702. s. 76–83.
• Duus, Rolf & Laane, Carl Morten Motzfeldt (1983). Cytological studies on the life cycle in Absidia glauca Hagem (Mucorales). Cytologia. ISSN 0011-4545. 49. Vis sammendrag

  The nuclear behaviour and life-cycle in Absidia glauca (Mucorales) have been examined by a variety of microscopical techniques. The uninucleate sporangiospores germinate to produce a coenocytic multinucleate my6celium. Vegetative nuclear division involves persistent nuclear envelope, asynchronous chromatid separation and lack of a metaphase plate. Sporangiospores formed inside the sporangium by a process of progressive cleavage, each protoplast containing a single nucleus. Zygospores form after fusion by (+) and (-) gametangia on different mycelia. Nuclei fuse in pairs in the forming zygospore, but some nuclei remain haploid. Before zygospore dormancy a number of both haploid and diploid fusion nuclei degenerate. Remaining fusion nuclei are enlarged and probably in meiotic prophase before dormancy. Meiotic stages were not observed. Zygospores did not germinate after dormancy by forming germ sporangia. Instead, hyphal development occurred inside a number of zygospores and a vegetative mycelium was produced. It is not known whether diploid nuclei divide meiotically or become haploid by sucessive chromosome loss during this process.

• Laane, Carl Morten Motzfeldt; Croff, Bjørn & Wahlstrøm, Rolf (1983). Cytotype distribution in the Campanula rotundifolia complex in Norway, and cyto-morphological characteristics of diploid and tetraploid groups. Hereditas. ISSN 0018-0661. 99, s. 21–48. Vis sammendrag

  Chromosome behaviour and morphology of about 200 geographically separated populations of the Campanula rotundifolia complex in Norway were analyzed. diploid populations (2n=34), some being close to the Greenland C.gieseckiana Vest ssp.gieseckiana occurred exclusively in the northernmost and NE parts of Norway (Finnmark and Troms), diverse tetraploid (2n=68) groups, in other areas, some of them being referable to C.gieseckiana Vest. ssp. groenlandica (Berl.)Böcher, others to C.rotundifolia s.str. As considerable introgression occurs, a satisfactory taxonomic arrangement in the complex appears impossible. Diploid and tetraploid individuals are easily separated on pollen size and milk sap characteristics. They rarely form hybrids in nature, but tetraploid (usually not triploid) hybrids were produced experimentally. The diploid karyotype shows the chromosomes to be arranged in pairs only, secondary polyploid characteristics were not found. Meiotic stability varies between groups of populations from lowland, mountain, coastal and arctic areas. The Norwegian diploids possibly represent the phylogenetically oldest group known in the complex. By chromosome doubling tetraploids have been formed, which extended their distribution range and intercrossed with other groups immigrating from the South.

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• Laane, Carl Morten Motzfeldt & Lie, Thore (2007). Moderne Mikroskopi med Enkle Metoder. Unipub forlag. ISBN 978-82-7477-281-6. 350 s. Vis sammendrag

  Mikroskopet er et av de viktigste forskningsinstrumentene innen bl.a. biologi og medisin. De ulike mikroskopiske metodene har stor betydning innen felter som biologisk systematikk, medisinsk diagnostikk, sykdomsbekjempelse, genteknologi, næringsmiddelkontroll, materialsikkerhet, og etterforskningsteknikk. På tross av mikroskopiens store betydning, har faget likevel vært ansett som omkostningskrevende og teknisk vanskelig. I denne boken er det lagt vekt på å beskrive moderne mikroskopi på en lettfattelig måte og i detalj, slik at mikroskopet fungerer etter forutsetningene og brukeren kommer frem til et vellykket resultat. Blant annet viser forfatterne hvordan man med enkle digitale teknikker og rimelige omkostninger kan oppnå resultater som er fullt på høyde med dem man får fra avanserte forskningsmikroskop. Boken inneholder også beskrivelser av de vanligste fargemetodene for fremstilling av preparater og gir en oversikt over en rekke mikroskopiske teknikker, både enkle og mer avanserte. Boken er først og fremst skrevet for å gi nyttige grunnkunnskaper for alle som bruker mikroskopet, både yrkesmessig og på hobbybasis.

• Bjercke, Alf R. & Laane, Carl M. Motzfeldt, Redaktør (2005). De dansk-norske dragonregimenters rolle under den nordeuropeiske krise 1758-1762. Alf R. Bjercke forlag. ISBN 82-91819-04-1. 87 s. Vis sammendrag

  Norske troppers deltagelse i internasjonale militæroperasjoner er ikke noe nytt. En lite kjent episode i vår historie hvor Danmark-Norge såvidt unngikk å komme i krig med Russland behandles. Bare tilfeldigheter og danskekongens effektive mobilisering av en slagkraftig hær førte til at dobbeltmonarkiet unngikk oppstykking, dels til Russland, dels til hertugdømmet Slesvig-Holstein. Hendelsene representerer tankevekkende momenter, ikke minst for vår nåværende forsvarsdebatt. Boken er basert på omfattende historiske studier og Alf R. Bjerckes monografi "Kätnersohne" utgitt på Peter Langs forlag, Frankfurt am Main i 1999.

• Laane, Carl Morten Motzfeldt & Lie, Thore (2001). Håndbok i Mikroskopi og fremstilling av preparater. 2 reviderte utgave. Gyldendal Akademisk. ISBN 82-05-28076-2. 239 s. Vis sammendrag

  Mikroskopet er blant de viktigste forskningsinstrumentene innen mange sentrale områder, blant annet biologi og medisin. De ulike mikroskopiske teknikkene har på samme måte stor betydning innen felter som biologisk systematikk og miljøvern, medisinsk diagnostikk og sykdomsbekjempelse, næringsmiddelkontroll og materialsikkerhet, innen genteknologi og elektronisk produktutvikloing. Boken gir nyttig basiskunnskap for alle som bruker mikroskopet. Både mikroskopets virkemåte og de viktigste mikroskopiske teknikkene beskrives.

• Laane, Carl Morten Motzfeldt & Lie, Thore (1992). Håndbok i mikroskopi og fremstilling av preparater. Universitetsforlaget. ISBN 82-00-40442-0. 224 s. Vis sammendrag

  Mikroskopet er et av de viktigste forskningsinstrumentene innen mange sentrale fagområder, blant annet biologi og medisin. De ulike mikroskopiske teknikkene har på samme måte stor betydning innen felter som biologisk systematikk og miljøvern, medisinsk diagnostikk og sykdomsbekjempelse, næringsmiddelkontroll og materialsikkerhet, og innen genteknologi og elektronisk produktutvikling. Del I omhandler selve mikroskopet og dets oppbygning og virkemåte, samt en innføring i optiske prinsipper og en beskrivelse av de viktigste mikroskoptypene. Del II beskriver de viktigste mikroskopiske teknikkene og framstilling av preparater innen botanikk, zoologi og medisin.

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• Laane, Carl Morten Motzfeldt (2014). Re: En krigers bekjennelser. Tidsskrift for Den norske legeforening. ISSN 0029-2001. 134(23/24). doi: 10.4045/tidsskr.14.1463.
• Størmer, Fredrik Carl & Laane, Carl Morten Motzfeldt (2012). Is the mitotic process linked to a magnetite based cell signaling system? Biological and Biomedical Reports. ISSN 2162-4186. 2(2), s. 123–125.
• Mysterud, Ivar; Schumacher, Trond; Karlsen, Jan; Hjort Tønnesen, Hanne; Laane, Carl Morten Motzfeldt & Skulberg, Olav Magnus (2012). Jakten på alveldens missing link. Fokus på blågrønnbakterier vi vet lite om. Sau og geit. ISSN 0036-5009. s. 52–57.
• Skulberg, Olav Magnus; Mysterud, Ivar; Karlsen, Jan; Tønnesen, Hanne Hjorth; Laane, Carl Morten Motzfeldt & Schumacher, Trond (2012). Søkelys på cyanobakterier vi vet lite om. Biolog. ISSN 0801-0722. 30(3), s. 32–41.
• Mysterud, Ivar; Schumacher, Trond; Karlsen, Jan; Tønnesen, Hanne Hjorth; Laane, Carl Morten Motzfeldt & Skulberg, Olav Magnus (2011). Jakten på alveldens "missing link" (15). Sau og geit. ISSN 0036-5009. 64(5), s. 53–57.
• Størmer, Fredrik C. & Laane, Carl Morten Motzfeldt (2010). Is magnetite involved in the formation of neurodegenerative diseases? Medical Hypotheses. ISSN 0306-9877. 74(2), s. 391–391. doi: 10.1016/j.mehy.2009.09.023.
• Størmer, Fredrik C. & Laane, Carl Morten Motzfeldt (2010). Are the instinct storage magnetic-based in the neurons? Medical Hypotheses. ISSN 0306-9877. 74(1), s. 203–204. doi: 10.1016/j.mehy.2009.07.001.
• Laane, Carl Morten Motzfeldt; Høiland, Klaus & Tarjem, Guro (2010). Slimsopp,-Framtidas Ingeniør. [Radio]. Norsk Rikskringkasting, Oslo.
• Størmer, Fredrik C. & Laane, Carl Morten Motzfeldt (2009). "Membrane-bound memory in the neurons". Medical Hypotheses. ISSN 0306-9877. 73(3). doi: 10.1016/J.mehy.2009.05.004.
• Størmer, Fredrik C. & Laane, Carl Morten Motzfeldt (2009). Are the instinct storage magnetic-based in the neurons? Medical Hypotheses. ISSN 0306-9877. doi: 10.1016/j.mehy.2009.07.001.
• Størmer, Fredrik C. & Laane, Carl Morten Motzfeldt (2009). Is magnetite innvolved in the formation of neurodegenerative diseases? Medical Hypotheses. ISSN 0306-9877. doi: 10.1016/j.medhy.2009.09.023.
• Størmer, Fredrik C. & Laane, Carl Morten Motzfeldt (2009). Are the astrocytes involved in magnetite-based memory? Medical Hypotheses. ISSN 0306-9877. 73(6), s. 1072–1073. doi: 10.1016/j.mehy.2009.05.004.
• Stormer, F.C. & Laane, Carl Morten Motzfeldt (2009). Membrane-bound memory in the neurons? Medical Hypotheses. ISSN 0306-9877. 73(3), s. 462–462. doi: 10.1016/j.mehy.2009.03.017.
• Laane, Carl Morten Motzfeldt; Mysterud, Ivar; Longva, Ottar & Schumacher, Trond (2009). Borrelia og Lyme-Borreliose- morfologiske studier av en farlig spirochet. Biolog. ISSN 0801-0722. 27(2), s. 30–45. Vis sammendrag

  Klinisk diagnostikk er ofte problematisk ved Lyme-borreliosis og mikroskopi kan være et av mange diagnostiske hjelpemidler. Forskningsarbeide i tilknytning til denne artikkelen har bidratt til å øke oppmerksomheten rundt mange pasienter med mulig kronisk borreilose og Regjeringen har nå nedsatt et hurtigarbeidende utvalg for å komme med forslag til forbedret diagnostikk og behandling. Artikkelejn behander Borreliaproblemet fra et bredt biologisk grunnlag.

• Mysterud, Ivar; Skulberg, Olav.M.; Laane, Carl Morten Motzfeldt; Schumacher, Trond; Karlsen, Jan & Tønnesen, Hanne Hjorth (2008). I Mørefjella på leting etter ALVELDgiften kilder. Biolog. ISSN 0801-0722. 26(4), s. 30–43. Vis sammendrag

  Årsaken til sykdommen "Alveld" er fortsatt ukjent. Høsten 2007 ble det oppdaget en biofilm i tilknytning til vann i de sykdomsfarlige beiteområdene. Den viste seg å inneholde en rekke arter blågrønnbakterier og mange andre mikroorganismer. Forskerne leter nå etter mulige giftkilder.

• Laane, Carl Morten Motzfeldt; Mysterud, Ivar; Skulberg, Olav M. & Schumacher, Trond (2008). Blågrønnbakterier og andre mikroorganismer i en biofilm fra Nord-Møre. Har de "Alveld"-relasjoner? Biolog. ISSN 0801-0722. 26(2), s. 8–23. Vis sammendrag

  En velutviklet "biofilm" på Nørd-Møre som er knyttet til utbredelsen av levermosen Anthelia juratzkana innholder en rekke giftproduserende blågrønnbakterier som mistenkes som cofaktor for utviklingen av den, tildels dødelige sauesykdommen "alveld". Artikkelen beskriver et uvanlig variert mikrobielt økosystem som gir grunnlag for videre undersøkelser av årsakene til særs alvorlige sykdomskompleks som i utgangspunktet rammer husdyr, men som også mistenkes for å kunne ha alvorlige virkninger på drikkevannskvalitet og en rekke kroniske medisinske lidelser.

• Synnevåg, Anne & Laane, Carl Morten Motzfeldt (2008). Kan en celle tenke og snakke? I Verd å Vite. (se podhead.dk-podcast side-download til din iPod helt gratis! [Radio]. Norsk Rikskringkasting P1 Marienlyst. Vis sammendrag

  It is now known that even single cells show intelligence being manifested through the application of innate abilitie4s to new situations. A numer of expamples are presented.

• Campbell, Carmen; Laane, Carl Morten Motzfeldt & Moses, Ashley (2008). Monitoring Cytopathic Effect Induced in endothelial Cells by Human Immunodeficiency Virus using Electric Cell-Substrate Impedance Sensing. Vis sammendrag

  By using the electrical cell-substrate impedance sensing system (ECIS) we have been able for the first time to monitor and study cytopathic effects of Human Immunodeficient Virus (HIV) upon changes of cellular motion behaviour with a sensitivity within the range of a few Angstroems for a period of up to 120 hours, together with the effects of the reverse transcriptase factor AZT.

• Brandtzæg, Per; Bye, Ragnar; Eskeland, Trond; Flood, Per; Holck, Per & Høiland, Klaus [Vis alle 10 forfattere av denne artikkelen] (2007). Kulturkollisjon mellom naturvitenskap og jus. Juristkontakt. ISSN 0332-7590. s. 61–62. Vis sammendrag

  Det kan se ut som gjenopptakelseskommisjonen har kollidert med en naturvitenskapelig kultur. Men hverken vi eller gjenopptakelseskommisjonen står fritt til å velge mellom de to kulturene. Når naturvitenskapen gir oss klar beskjed om at det ikke er sammenheng mellom to fenomener, kan ikke jusen ignorere det. Artikkelen er i sin helhet også trykket under vignetten "Med andre ord" i "Klassekampen" (kronikk- og debattredaktør Astrid Dybvik") onsdag 08 august 2007.

• Skillestad, Tor & Laane, Carl Morten Motzfeldt (2007). "En hund etter skolisser". Reportasje om adferd hos AiredaleTerrier. [Avis]. "Se og Hør", Ukeblad 23-27 November 2007, Nr.93, uke 47. Vis sammendrag

  For bikkja "Ennis" er skolisser som spagetti! Professor Morten Motzfeldt Laane kan alt om bakterier og virus, men å få bikkja "Ennis" til å slutte å bite i stykker skolissene, det klarer han ikke. (Reportasje med bilde)

• Laane, Carl Morten Motzfeldt & Yu, Leung Wai (2005). "The Living Cell".Eds.:Prof.Dr.philos. Morten M. Laane and Leung Wai("Leo") Yu, M.Sc.30min. Windows 98/ME/2000/XP, Mediaplayer 9.1 or later/Pentium 450Mhz processor,64MB RAM. Norsk Biologforening BIO, P.B.1066, N-0316,Blindern. ISBN: 82-997130-0-5. Vis sammendrag

  This CD-rom contains a number of video files of living cells (bacteria, protists, plant-, animal- and human cells). the cell phenomena have been studied by time-lapse microscopy using phase-contrast and other optical techniques. A number of cell phenomena are shown that are difficult, or even almost impossible to demonstrate during ordinary laboratory courses. Some of the videos show unique events that have taken years to record. With english audio explanations.

• Laane, Carl Morten Motzfeldt; Haugarvoll, Erlend; Thorsen, Jim; Huang, Qirong & Koppang, Erling O. (2005). Melanogenesis and melanosome transport and secretion in a CD83+ teleost leucocyte.
• Laane, Carl Morten Motzfeldt; Haugarvoll, Erlend; Thorsen, Jim; Huang, Qirong & Koppang, Erling O. (2005). Melanogenesis and tubular melanosome transport to plasma membrane in a CD83+ teleost leucocyte.
• Laane, Carl Morten Motzfeldt (2004). Redaksjonell kommentarartikkel: Optical microscopy verfies Technique. Biophotonics. ISSN 1081-8693. 11(7), s. 54–56. Vis sammendrag

  Editorial written article with comments about De Blasio, Laane, Wahlmann and I.Giaevers article 2004 in Biotechniques.

• Laane, Carl Morten Motzfeldt (2003). "The living Cell, time-lapse studies of cells alive". Vis sammendrag

  The motile behaviour of pro- and eukaryote cells has been recorded by time-lapse digital video files by aid of advanced microscopicasl techniques. Various bacteria, blue-green bacteria, protists, fungal, plant- and animal cells are shown in various phases of cell and life cycle,together with examples of human cell types. Living mitoses and behaviour of various cell organelles are also shown. The files are accompanied by self-composed music. A selection of this CD-rom lasting 45 minutes was shown with explanations of the biological and cell biological phenomena seen.

• Laane, Carl Morten Motzfeldt (2003). Dobbeltspiralen 50 år. I Reissegg, Øyvind (Red.), Aschoug og Gyldendal Store norske Årbok 2003. Kunnskapsforlaget.
• Laane, Carl Morten Motzfeldt (2003). "The living Cell: Advanced studies of living cells with simple,-or self-made equipment".
• Laane, Carl Morten Motzfeldt (2002). Bidrag til videoproduksjon av "Realistiske Muligheter", Introduksjonsvideo for "Ungforsk", Rekrutteringsarrangement ved Det Matematisk Naturvitenskapelige Fakultet, Universitetet i Oslo. [TV]. Gazette Reklamebyrå. Vis sammendrag

  Videoen er en multimediaproduksjon med flere bidragsytere. Jeg har levert videosekvens, timelapse av humane celler (endothelceller,makrofager,etc.), timelapse av kronbladbevegelser i trepeon, dessuten deltagelse i introduksjonsdelen.

• Campbell, Carmen; Gregory, Kenton; Laane, Carl Morten Motzfeldt & Giaever, Ivar (2002). Real Time Monitoring of Mammalian Cell attachment to Extracellular Matrix Proteins. Vis sammendrag

  ECIS attachment assays of HMVSC,RLEC, and NRK cells to protein modiefied surfaces were performed. Cells adhered more quickly in all cases to pure F coated surfaces than to E coated surfaces. The impedance signal reached steady state on pure E coatings only after several hours. Cells grown on F reached steady state impedance in approximately half an hour. The pilot study provides the foundation for further characterization of cell attachment to mixed protein layers and may provide dynamic imformation important in tissue engineering applications.

• Laane, Carl Morten Motzfeldt & Yu, Leung Wai (2001). Ur-celler i termittenes mager. [Radio]. NRK TV1 Oslo/Trondheim : Norsk Rikskringkasting. Vis sammendrag

  Innslag i "Schrödingers Katt" med videofilmopptak av primitive flagellatceller "urceller" i mikroskop, forskning som støtter opp om den serielle endosymbioseteorien og mitosens fylogentiske opprinnelse. Den verdenskjente biologen Lynn Margulis hevder at samarbeid mellom organismene er det viktigste utviklingshistoriske prinsipp. Vi har undersøkt et spesielt punkt i hennes serielle endosymbiontteori som kaster lys over mitosen. "Primitive bakterier" har festet seg til "urcellen" og blitt omdannet til flagell, centriole/centromer og utgjør "mitoseapparatet" i moderne celler.

• Campbell, Carmen; Laane, Carl Morten Motzfeldt; Giaever, Ivar & Gregory, Kenton (2001). A study of adipose derived micro-vascular endothelial cell adhesion to elastin with the electric cell-substrate impedance sensor-implications for tissue engineering applications. Vis sammendrag

  This study proposes to integrate the ECIS electrode into graft material to elucidate the adhesions of cells in real time.

• Laane, Carl Morten Motzfeldt & Yu, Leung Wai (2000). Mitosen- et synkronisert dobbeltsystem. Naturen. ISSN 0028-0887. 124(1), s. 3–13. Vis sammendrag

  Nyere undersøkelser viser at mitosen (kjernedeling) består av to uavhengige, synkroniserte systemer. Dette er en viktig oppdagelse. Den støtter det syn som Naturens tidligere redaktør, professor Jostein Goksøyr, først gjorde seg til talsmann for: cellene har med seg en arv fra flagellatene. Dette har betydning ikke bare for å forstå evolusjonen, men også i celleforskning knyttet til kreftforskning, der man hittil ensidig har konsentrert seg om selve genene, mens man burde se nærmere på selve spindelapparatet som er det som svikter i kreftceller.

• Lyså, Per Åge; Greving, Atle; Selsjord, Marianne; Laane, Carl Morten Motzfeldt; Barrett, Natascha & Kvinnsland, Bjarne [Vis alle 10 forfattere av denne artikkelen] (2000). Embryonics. Vis sammendrag

  Du beveger deg inn i et kuleformet bygg plassert i Sjømannsparken, Østfold Kunstnersenter, Ferjestedsveien 5. Inne i det sfærisk formede rommet kommer du inn i en verden av underlige svevende former og vesener som skifter i en tilsynelatende uendelig prosess. I dette rommet er i tillegg lyset i kontinuerlig forandring. Elektronisk musikk/lydbilder komplimenterer billedverdenen som utfolder seg i rommet. Du befinner deg i urhavet der alt liv på hadde sin begynnelse. I løpet av de 4 milliarder årene hvor det har eksistert liv på jorda, har livsformer utviklet seg i form av mikroorganismer. Disse utgjør grunnlaget for alt avansert liv som har oppstått senere. Vi mennesker er bygget opp av disse tidlige livsformene og hver organisme er avhengig av dem for å overleve. Med andre ord bærer vi med oss evolusjonen som en del av vår egen kropp. Mennesket er produktet av de samarbeidende cellene og vevene, enkeltcellene er produktet av samarbeidet mellom de opprinnelige bakteriekomponentene, bakteriene er jordens herskere i ulike former og uttrykk. Mange av disse formene er svært fascinerende og vakre og har inspirert oss til å fantasere rundt Urhavet og de første livsformene. Etterhvert som urdyrene utviklet sine bevegelsesmønstre, fikk de større tilgang på føde, som påvirket evolusjonen. På samme måte er Embryonic-prosjektet i kontinuerlig utvikling, deltakerne høster nye erfaringer, erverver mer kunnskap og utvikler sin kunst/kunnen, i en pågående prosess av indre vekst. Marianne Selsjord, billedkunstner og amanuensis på Statens Kunstakademi i Oslo, hadde ideen til Embryonic. Det tverrfaglige samarbeidsprosjektet består av 16 personer med bakgrunn fra forskning innen palentologi, mikrobiologi, billedkunst, 2D og 3D animasjon, film, musikk, Internett, lys, programmering, styringsmekanismer, interaktivitet, teknisk kompetanse og arkitektur. Prosjektleder, produsent: Mona Bentzen Arkitektur/Architecture: INTRAVISION architecture AS v/Per Åge Lyså og Atle Geving Kunstnerisk visuelt innhold, 3D animasjon: Marianne Selsjord, Espen Tversland, Rune Spaans, Nina Bergskog, Nina Tenskog og Anna Rösiö Timelaps mikro organisme: professor doktor phil. cellebiologi: Carl Morten Motzfeldt Laane musikk: Natasha Barrett og Bjarne Kvinnsland Lysdesign: Kurt Hermansen Programmering av interaktive multimedia applikasjone: Yngve Sandboe Webdesign: Morten Skogly Konsulent: Doktorgradstudent i paleontologi/PhD student in paleontology Øyvind Hammer Takk til Atelier Nord, Notam og Statens Kunstakademi i Oslo.

• Laane, Carl Morten Motzfeldt (1999). "Slime mold Songs". [Radio]. New York , USA : "Pulse of the Planet"/Discovery Channell. Vis sammendrag

  Electrical measurements of the oscillation patterns in the slime mold Physarum polycephalum have been transformed to music. By listening to the pleasant "songs" of Physarum one is able to hear its patterns of natural activities and also its reactions to cell poisons as alcohol.

• Laane, Carl Morten Motzfeldt & Metzner, Jim (1999). Slime Molds. [Radio]. "Pulse of the Planet", Broadcast Co., Nat.Sci.Found.-NASA US. Vis sammendrag

  Animal, vegetable or mineral? Well, for some creatures, the answer is neither. Iám Jim Metzner on The Pulse on the Planet Channel, presented by the American Museum of Natural History. The slime mold is a single celled organism which actually moves across ther forest floor in search of the food which it feeds. Morten Laane is a Professor of Biology at the Biological Institute in Norway. To bring slime molds to attention, he developed slime mold music, which we are listening to right now etc.

• Laane, Carl Morten Motzfeldt (1998). Nye Melodier i Celleforskning. Biorytmer i slimsoppen Physarum polycephalum. Naturen. ISSN 0028-0887. 122(2), s. 100–108. Vis sammendrag

  Slimsoppen Physarum polycephalum byr på interessante muligheter i eksperimentell celleforskning. Den danner centimeterstore, gule, smørliknende masser, såkalte plasmodier som simulerer forholdene i en enkelt celle. Celleinnholdet strømmer frem og tilbake i et åreliknende nettverk. Måler man denne prosessen over tid, kan cellens livsytringer studeres på samme måte som hjerterytmen eller pulsen hos pasienten. Pulseringene, eller oscillasjonene kan omsettes til rytmisk musikk og man kan høre når cellen er syk, stresset og hvordan den reagerer på ytre stimuli. Plasmodiet har en naturlig indre biokjemisk synkroni som gir muligheter for å studere sentrale, periodiske, biokjemiske prosesser.

• Krüger, Sverre & Laane, Carl Morten Motzfeldt (1998). "Newton" NRK TV1 "Om termittflagellater". [TV]. NRK TV 1.
• Lønning, Per Ståle & Laane, Carl Morten Motzfeldt (1998). "Fasting Torgersensaken". [TV]. TV 2, Oslo Sentrum. Vis sammendrag

  Interview/debatt med Per Ståle Lønning, Fredrik Fasting Torgersen (drapsdømt), Morten Motzfeldt Laane, Klaus Høiland o.fl.

• Laane, Carl Morten Motzfeldt; Nordland, Arve & Boman, Arild (1998). Mitose og Meiose. Om celledeling.
• Krüger, Sverre & Laane, Carl Morten Motzfeldt (1997). Newtons Hage. Om slimsopp. Innslag med laboratorieaktiviteter og eksperimenter med Physarum polycephalum (slimsopp). Interviewer: Sidra Khawar. [TV]. NRK TV1.
• Tunstad, Erik & Laane, Carl Morten Motzfeldt (1996). "Verd å Vite". "Om slimsopp". [Radio]. NRK P1.
• Tunstad, Erik & Laane, Carl Morten Motzfeldt (1994). "Slik er Livet". [Radio]. NRK P2.
• Laane, Carl Morten Motzfeldt; Giaever, Ivar; Mandelbrot, Benoit & Halvorsrud, Ragnhild (1992). "Slimsopp og Fraktaler". [TV]. NRK TV 1 Schrödingers Katt.
• Wold, J. K.; Smestad Paulsen, B.; Haugli, T.; Laane, Carl Morten Motzfeldt & Nordal, A. (1989). Økning i tebaininnholdet i Papaver brakteatum etter colchicinbehandling av frø: - kan gi et alternativ til morfinbasert fremstilling av kodein.
• Laane, Carl Morten Motzfeldt (1988). Mot renessanse for lysmikroskopet. Nye instrumenter omgår Abbés teorier. Naturen. ISSN 0028-0887. 5, s. 170–173.
• Laane, Carl Morten Motzfeldt (1988). Livets røde tråd. A-magasinet : uketillegg til Aftenposten. ISSN 0807-5654. s. 20–24. Vis sammendrag

  Artikkelen gir en populær sammenfatning av sammenhengen mellom arv og kromosomer og inkluderer en rekke mikrofotografier i farger.

• Laane, Carl Morten Motzfeldt & Lie, Thore (1988). Organismer med lave kromosomtall- et forskningsmateriale med enestående muligheter. Naturen. ISSN 0028-0887. s. 203–210. Vis sammendrag

  Studier av organismer med svært lave kromosomtall (n=1-4) kan kaste nytt lys over basale mitose- og meiosemekanismer. Vi presenterer til dels resultater og egne egne oppfatninger basert på undersøkelser av originalt materiale, dels tilsendt, dels kultivert i eget laboratorium.

• Iversen, Tor-Henning & Laane, Carl Morten Motzfeldt (1987). Kan gener repareres? Adresseavisen. ISSN 0805-3804. s. 6–7.
• Laane, Carl Morten Motzfeldt & Høiland, Klaus (1987). Problemet som ble "løst". Altaihaukeskjegg, Crepis multicaulis, var ingen istidsrelikt. Naturen. ISSN 0028-0887. 112, s. 99–101.
• Margulis, Lynn; Schwartz, Karlene V. & Laane, Carl Morten Motzfeldt (1987). Life on Earth. The five Kingsdoms. The fungal Kingdom 20-35mm color slides. Vis sammendrag

  Morten M. Laane har bidratt med fotografisk materiale til arbeidet.

• Höeg, Ove Arbo & Laane, Carl Morten Motzfeldt (1986). "Om Ålegress". [Radio]. Sjøkant Nøtterøy, NRK P2. Vis sammendrag

  Populærvitenskapelig samtale om Ålegress

• Lie, Thore & Laane, Carl Morten Motzfeldt (1984). Slimsopp- enestående forsøksorganismer i eksperimentell biologi. Forskningsnytt fra Norges almenvitenskapelige forskningsråd. ISSN 0015-7945. 29(5), s. 20–27. Vis sammendrag

  Mange biologiske systemer er ytterst kompliserte. Menneskets celler er blant de mest komplekse systemene- og tilsvarende vanskelige å studere. Dette har gitt seg utslag på mange områder, ikke minst når det gjelder å forstå årsakene til en av de mest fryktete sykdomsgrupper, nemlig kreft. Slimsoppen Physarum utgjør et modellsystem som er langt enklere å studere og holde i kultur enn menneskeceller. Når en i tillegg vet at det som er gyldig for en Physarum celle også er gyldig for mere komplekse celler, som f.eks. en human kreftcelle, for studiet av slimsoppen Physarum et betydelig perspektiv. Artikkelen behandler livscyclus og kromosomsystemet i denne organismen. (Artikkelen danner introduksjon til en rekke andre artikler av Laane og medarbeidere. Den har tilknytning til problemstillinger fremsatt av den amerikanske professor Lynn Margulis(National Academy of Science Medal, Humboldt prisen, Darwin-Wallace Prisen) og forskning utført med Ivar Giaever, (nobelprisen 1973).

• Laane, Carl Morten Motzfeldt & Lie, Thore (1984). Det "ustabile" kromosomet. Mot et nytt syn på kromosomene som dynamiske strukturer. Naturen. ISSN 0028-0887. s. 227–235.
• Laane, Carl Morten Motzfeldt & Lie, Thore (1983). Grunnforskning- en basal kilde til kunnskap og utvikling. Naturen. ISSN 0028-0887. s. 183–190.
• Lie, Thore & Laane, Carl Morten Motzfeldt (1983). Mikrotubuli. Naturen. ISSN 0028-0887. s. 21–26.
• Lie, Thore & Laane, Carl Morten Motzfeldt (1982). Kromosomets tredimensjonale struktur. Naturen. ISSN 0028-0887. s. 35–41. Vis sammendrag

  Utforskningen av kromosomene, de arvebærende organellene i cellekjernen, har nå pågått i om lag 110 år. De resultater som i dag foreligger skriver seg til dels fra deduksjoner på grunnlag av kryssningseksperimenter, dels fra direkte obervasjoner utført med ulike typer mikroskoper. I mange tilfeller har eksperimentene vært kombinerte med kjemiske, biokjemiske og visse former for fysiske analyser. På grunnlag av alt dette har man fått et ganske godt innblikk i kromosomenes oppbygning og funksjon, men kromosomene er i seg selv så vidt kompliserte at mange viktige problemer har forblitt uløste. Ennå fins ikke fullt ut akseptable modeller for hvordan DNA- molekylet bygger opp kromosomene i eukaryote planter og dyr.

• Laane, Carl Morten Motzfeldt & Lie, Thore (1982). Sekksporesopp,- et interessant genetisk forsøksmateriale. Naturen. ISSN 0028-0887. s. 107–114. Vis sammendrag

  Sekksporesopp (ascomyceter) har en rekke egenskaper som gjør dem velgnete til genetiske undersøkelser. De er lette å dyrke og vokser fort, og det er ikke særlig vanskelig å lage et stort antall forskjellige mutanter av dem. Sporene er haploide, slik at mutantgener kommer umiddelbart til uttrykk. Hos flere er dessuten ascus så trang at sporene med sine kjerner vil ligge fastlåst i en rekkefølge som er betemt ved kromosomseparasjonene i de tre meiosedelingene som inntrer før sporedannelsen. Vi presenterer resultater fra egne eksperimenter med Sordaria macrospora.

• Halvorsrud, Ragnhild; Giaever, Ivar; Laane, Carl Morten Motzfeldt; Feder, Jens & Jøssang, Torstein (1991). Impedance measurement of the protoplasmatic shuttle-streaming in the slime mold Physarum polycephalum. Cooperative Phenomena Group, Institute of Physics, University of Oslo. 91(4). Vis sammendrag

  This report deals with a method where mechanical displacements due to cell locomotion is directly reflected in the measured impedance. The organism to be examined is placed onto gold electrodes in a Petri dish containing electrolyte. A weak electric field is then applied. The design of the electrode system is a crucial aspect. By using a big electrode with area of order 1cm2, the measured impedance is dominated by the electrolytic interface at the small electrode. Relative weak fluctuations in the impedance, corresponding to cell movements on the electrode will now be detectable. The method of using an electrical field to monitor the dynamic aspect of cell behaviour was invented by Ivar Giaever (nobel laureate 1973) and Charlie Keese and have been explored in mammalian cell lines. The theoretical resolution of a good light microscope is 0.17 micro meter. On the other hand, impedance fluctuations which correspond to vertical displacements of the order of 1 Å can be detected, employing the method described in this report.

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