[Circadian rhythm of the mitotic activity and of the number of nuclei synthesizing DNA in sarcoma 37 in white mice].
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.
D000818:Animals; D002467:Cell Nucleus / Q000378:metabolism*; D002940:Circadian Rhythm; D004273:DNA, Neoplasm / Q000096:biosynthesis*; D008297:Male; D051379:Mice; D008938:Mitosis; D009368:Neoplasm Transplantation; D012511:Sarcoma 37 / Q000378:metabolism*; D013936:Thymidine / Q000378:metabolism; D013997:Time Factors; D014316:Tritium
D004273:DNA, Neoplasm; D014316:Tritium; D013936:Thymidine
Sutochnyĭ ritm mitoticheskoĭ aktivnosti i chisla iader, sinterizuiushchikh DNK, v sarkome 37 belykh mysheĭ