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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of cancer research and clinical oncology 80 (1973), S. 53-68 
    ISSN: 1432-1335
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung 1. Zahl und Struktur der Chromosomen eines Ehrlich-Ascites-Carcinoms wurden in Abhängigkeit vom Geschlecht des Wirtstiers und Kulturalter analysiert. 2. Der Variationsbereich der Chromosomenzahl liegt zwischen 37 und 120; die „stemline”-Zahl von 62/63 liegt im hypertriploiden Bereich. 3. Der Stamm ist charakterisiert durch typische Markerchromosomen. Im Gehalt an Markerchromosomen bestehen zwischen verschiedenen Zellen z. T. beträchtliche Unterschiede. 4. Die Variation der Chromosomenzahl wird vom Geschlechtsmilieu der Tumorwirtstiere mitbestimmt. In Weibchen ist der chromosomale Variationsbereich enger und der Anteil von „stemline”-Zellen höher als beim Männchen. Zwischen weiblichen und männlichen tumort-ragenden Tieren bestehen keine qualitativen Unterschiede an Markerchromosomen und nur geringe quantitative für die Marker B und D. 5. Bei exponentiellem Wachstum 4 Tage nach Inokulation ist die karyologische Stabilität höher wie in Anfangs-(2 Tage) und Endphasen (8 Tage) der Kulturperiode. 6. Die Entstehung oder Erhaltung hochploider Kerne sind in Tumoren auf weiblichen Wirtstieren geringer als auf Männchen, ebenso unter exponentiellen Wachstumsbedingungen im Vergleich zu Anfangs- und Endphasen der Kulturperiode. Der Polyploidisierungsgrad wächst stetig mit zunehmendem Tumoralter. 7. Das Wachstum des untersuchten Stamms ist begleitet von mannigfaltigen Mitose- und Kernanomalien.
    Notes: Summary The number and structure of chromosomes from cells of Ehrlich ascites tumour were correlated according to culture-age and sex of the host. Chromosome numbers were between 37 to 120; the “stemline” number of 62/63 was in the hypertriploid range. The strain was characterized by specific marker chromosomes. Cells differed greatly in their content of marker chromosomes .The variation of chromosome number was dependent upon the sex of the host. In females the variation was smaller and the number of „stemline” cells greater than in males. No existing qualitative differences were found in the marker chromosomes and only a few quantitatives in the markers B and D. The fourth day after inoculation (in exponential growth) karyological stability was found to be higher than at the beginning or the end of the culture period. Tumours in males had more polyploid cells than females. These cells were also more frequent during non exponential growth conditions at the beginning or the end of the culture period. The degree of polyploidisation increased with increasing tumour age. The growth of our strain was accompanied by different anomalies in mitosis and nuclear morphology.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 31 (1975), S. 844-846 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Mutations-induction followed by selection is a suitable method for developing a cell line with resistance to low doses of X-rays. In comparison with the original cell line, the derived resistant line is characterized by an enhanced variability of the chromosome number, and no higher level of cellular repair, limited to the two repair types described.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 42 (1986), S. 107-107 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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