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  • 1
    Electronic Resource
    Electronic Resource
    Cinephotographic superposition as a technique for the analysis of sub-cellular movement (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 1286-1287 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Eine Methode zur einfachen Quantifizierung von gerichteten Bewegungen subzellularer Teile, zum Beispiel in Furchungszellen, wurde entwickelt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01898023
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Inhibition of the Aggregation of Dissociated Embryo-Chick Fibroblast Cells by Adenosine Triphosphate (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 1008-1010 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT has been shown that there exists in many types of cells a nucleotide triphosphatase (ATPase) which is capable of hydrolysing exogenous adenosine triphosphate (ATP)1. According to evidence provided by electron micrographs it also appears as if the plasma membrane is a site of ATPase activity2. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2101008a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A Contractile Protein Model for Cell Adhesion (1966)
    [s.l.] : Nature Publishing Group
    Nature 212 (1966), S. 365-369 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ADHESION between surfaces ultimately depends on the balance of attractive and repulsive forces between them. Repulsion is essentially electrostatic, whereas attraction is also dependent on Van der Waals-London forces1. Hydrogen bonding and linkage between divalent cations and negatively charged ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/212365a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    On the nature of biological clocks? (1971)
    Springer
    Cellular and molecular life sciences 27 (1971), S. 1014-1015 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Feststellung, dass schlafende Goldhamster einen höheren ATP-Gehalt in Gehirn und Leber besitzen als wache Tiere und dass Zeitgeber, wie Licht und Temperatur, sowohl Zellviskosität als auch ATP-Niveau verändern.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02138850
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    An Alteration in Cell Morphology under the Influence of a Tumour RNA (1964)
    [s.l.] : Nature Publishing Group
    Nature 202 (1964), S. 1226-1227 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] 'Messenger' RNA functions to pass information from DNA3 and probably controls the biosynthesis of proteins through interaction with ribosomes, the RNA of which appears to have a structural function. However, a biological role has been reported for mammalian RNA: de Carvalho and Rand4 reported the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2021226b0
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    On the egg investments and fertilization reaction inPomatoceros triqueter L. (1971)
    Springer
    Cell & tissue research 113 (1971), S. 388-395 
    Details
    ISSN: 1432-0878
    Keywords: Pomatoceros triqueter ; Egg investments ; Fertilization reaction ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The ultrastructure of unfertilized and fertilized egg investments ofPomatoceros triqueter is described. A characteristic feature is the presence of a hitherto unrecorded additional investment layer, inserted between the chorion and the “outer border layer”, which is referred to as the intermediate layer. The fertilization reaction consists of the release of cortical granule material into the perivitelline “space”, and the severing of the microvillous cytosome to “outer border layer” connections, thus allowing an increase in the width of the perivitelline “space”. More ridged corrugations are found on the outer surface of the investments in the fertilized as compared with the unfertilized condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00968546
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  • 7
    Electronic Resource
    Electronic Resource
    Some aspects of cleavage in Pomatoceros triqueter eggs (1972)
    Springer
    Cell & tissue research 123 (1972), S. 486-495 
    Details
    ISSN: 1432-0878
    Keywords: Pomatoceros triqueter ; Cytokinesis ; Surface folding ; New surface membrane ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The first cleavage division of Pomatoceros triqueter eggs is described. Time-lapse microcinematographic and electron microscopic studies revealed that, prior to division, the plasma membrane was folded into pleats. These were not present after division. This fact pointed to an unfolding of the plasma membrane which enabled it to cover the increased surface area resulting from cleavage. It is suggested that the pre-cleavage folds are derived from the membranes of the cortical granules, which continue releasing their contents into the perivitelline region following fertilization and first division. Filamentous material in the form of a band was present subjacent to the plasma membrane in the region of the furrow. The individual filaments of this band measure 5 to 7 nm in cross section, the dimensions being similar to those described for other kinds of dividing cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00335544
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    The effect of temperature on ATP levels in cells of an ascitic Hepatoma (1969)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 73 (1969), S. 37-42 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The effect of temperature on intracellular ATP levels in cells of the ascitic Hepatoma 129 has been determined using an UV-enzymic method. ATP levels are found to vary inversely with temperature over the range (4°-37°C) studied, and this variation is found to be reversible. An indication of a possible direct correlation of ADP level with temperature was also obtained.A correlation is deduced between rise in intracellular ATP level and decrease in cytoplasmic viscosity, both from the present results, and from similar effects recently reported by Landau ('61) for increase in pressure.The significance of these observations is discussed with reference to the model for cytoplasmic viscosity proposed by Marsland ('56) and the wider biological significance of this effect is explored.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1040730106
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