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^(3)H-Autoradiography에 의한 숫병아리 胃粘膜 上皮細胞의 Cell cycle에 關하여

The Analysis of Cell Cycle in Gizzard of Chick Stomach

경북의대잡지 1972년 13권 2호 p.281 ~ 284
장성익, 柱剛,
소속 상세정보
장성익 (  ) - 慶北大學校 醫科大學 解剖學校室
柱剛 (  ) - 慶北大學校 醫科大學 解剖學校室

Abstract


In recent years, it has been believed that the DNA synthetic time (S-phase) is b~t~veerc 7 and 9 hours, however, the reports on this subject were vastly variable and also variable, on G~-phase (postsynthetic time)
We presumed that S-phase would not b:~ constant but S~GZ phase would be constant.
And we estimated the percent of labeled mitosis with one day postnatal chick stomach, and calculated´ as followings:
1. The S-phase was 4.5 hours, G~-phase was 8:8 hours.
2. Minimum S-phase was 3 hours.
3. The total generation time was 19. G hours and similar with the other reports, and the second curve was irregular, so it was computed by means of a formula using the labeling index and S-phase.
It could be concluded that there were some relations between shortened S-phase and prolonged G~-phase, and S-~ G~phase were constant, however, it is needed more consideration and further study.

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