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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 63 (1956), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 68 (1958), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 129 (1966), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 500-504 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] KAPLAN has shown that after four doses of sub-. lethal X-irradiation spaced at weekly intervals C57BL mice develop lymphatic leukaemia1. It has been demonstrated that the thymus is essential for this leukaemia development2, but that it need not be present during the irradiation. A mouse ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 149 (1942), S. 193-193 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN cancer therapy it is of great interest to distinguish between tumours according to their degree of mitotic activity. This requires a determination of the proportion of dividing to resting cells. It may even be useful to follow the character of mitosis after X-ray treatment. Human cells are ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 148 (1941), S. 501-502 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SHELL2 has shown that the offspring of X-rayed male mice produced before the onset of complete X-ray sterility contain a certain proportion—depending on the dosage—of semi-sterile individuals, which when outcrossed to unrelated animals throw litters of reduced size. This ...
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Chromosoma 1 (1939), S. 191-196 
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Conclusions The amount of relational coiling of chromatids during the prophase of mitosis and the average number of chiasmata were determined in the largest chromosome of five species of locusts. The statistical analysis of the data obtained suggests that probably there is a correlation between the amount of relational coiling per unit of chromosome length and the number of chiasmata. A similar suggestion was put forward bySax (1936) andHusted (1938), which was based upon observations made in different plant species. Though the difficulties encountered during the present cytological analysis of the chromosome structures, as well as the small number of species investigated, do not allow us to draw a definite conclusion, nevertheless it seems probable from our data that a greater degree of relational coiling of chromatids during mitosis is accompanied by a higher chiasma frequency during meiosis. The correlation furthermore indicates also that the physical basis of the tendency of chromatids, and that of paired chromosomes, to twist round one another relationally may be the same.
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 151 (1943), S. 244-246 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the light of recent knowledge of chromosome chemistry and gene action and its bearing on the interpretation of the mitotic cycle in the cell, a cyto-logical analysis was carried out on 565 human tumours (carcinoma of the skin, oesophagus, colon, rectum, larynx, lung, cervix, uterus and breast)1. ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 155 (1945), S. 778-780 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS year marks the centenary of the birth of Roentgen, who announced the discovery of X-rays to the Physico-Medical Society of Wurzburg fifty years ago (1895). The importance of X-rays for diagnosis in medicine was quickly realized; but their use in treatment, owing to technical difficulties, ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 150 (1942), S. 736-737 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DR. MANTON'S photograph1, in which she claims to show an “incontrovertible evidence” of the telophase chromosome split, illustrates what can only be a dicentric chromosome. While the long arms form a bridge of the criss-cross type2, the short arms lie across each ...
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