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KMID : 0351619720130020281
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Kyungpook Medical Journal
1972 Volume.13 No. 2 p.281 ~ p.284
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The Analysis of Cell Cycle in Gizzard of Chick Stomach
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Abstract
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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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KEYWORD
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