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  • Title: [DNA repair in cells of the radiosensitive mutant of Drosophila rad(2)201GI after gamma-irradiation].
    Author: Levina VV, Bil'din VN, Igusheva OA, Khromykh IuM.
    Journal: Genetika; 1992 Sep; 28(9):58-65. PubMed ID: 1473719.
    Abstract:
    A radiosensitive mutant of Drosophila melanogaster rad(2)201GI was analysed for the capacity to repair DNA single- and double-strand breaks induced by gamma-rays. Analysis was performed on cell cultures derived from embryos of homozygous mutant stock and wild type strain Oregon R. The viability of irradiated cells was studied. It was shown that the mutant strain cells had increased lethality, just like a whole organism. Single-strand breaks were analysed by alkaline sucrose gradient centrifugation; double-strand breaks were monitored by neutral elution. The similarity of repair kinetics of single- and double-strand breaks in cells of rad(2)201GI and Oregon R was shown. Probable molecular mechanisms of rad(2)201GI mutant radiosensitivity are under discussion.
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