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Comparison between Cell Cycles of Epithelial Cell Populations of Upper G. I. Tract
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KMID : 0363719760090010097
Abstract
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1. Ç¥ÁöÁö¼ö´Â À§°¡ 36,5%·Î¼ °¡Àå ³ô¾Ò°í, ½Äµµ°¡ 10.0%·Î¼ °¡Àå ³·¾Ò´Ù.
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-Abstract-
Esophageal, gastric and duodenal epithelial cells of 1 day postnatal chicks were labeled
with 3H-thymidine for the autoradiographic study of DNA synthesis and
cell cycle. After injection of 1 uGi / g B. W. of 3H-thymidine into the peritoneal cavity
of the chicks at 8 : 00 AM 3 chicks were sacrificed every hour for 20 hours and their
esophagus, gizzard and duodenum were fixed in Bouin's solution, and processed for
autoradiograph.
The total percentage of labeled cells, together with labeled mitotic figures which
developed after labeling determined the average values for generation time and its four
phases: that is, DNA synthetic phase, postsynthetic phase, and presynthetic phase.
Labeling index and mitotic index were also obtained.
These data indicated that there are certain definite relationships between the cell
cycles of esophageal, gastric and duodenal epithelial cell of 1 day postnatal chicks.
The relationships and their validity were discussed.
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