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  • Title: [Circadian rhythm of the mitotic activity and of the number of nuclei synthesizing DNA in sarcoma 37 in white mice].
    Author: Demskiĭ VI.
    Journal: Biull Eksp Biol Med; 1975 Oct; 80(10):102-4. PubMed ID: 1227603.
    Abstract:
    Circadian variations in the frequency of mitoses and the number of nuclei labed with thymidine-H3 in sarcoma-37 of mice were investigated. It was shown that the circadian rhythm of mitotic activity was composed of diurnal variations in the frequency of labeled and unlabeled mitoses. The G2-phase of mitotic cycle of the cells with labeled mitosis was approximately one hour. The G2-phase of the cells with unlabed mitosis lasted four hours and more. It is suggested that there are two cell populations in sarcoma-37.
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