Circadian rhythms in epidermal mitotic activity
β Scribed by Ellen M. Fagereng Tvermyr
- Book ID
- 112928419
- Publisher
- Springer-Verlag
- Year
- 1969
- Tongue
- English
- Weight
- 460 KB
- Volume
- 2
- Category
- Article
- ISSN
- 0340-6075
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π SIMILAR VOLUMES
Tongue keratinocytes have a high mitotic index (MI) with an evident circadian variation. Our study set out to compare and contrast two phases of the cell cycle: DNA synthesis (Sβphase), with inmunocytochemical detection by bromodeoxyuridine (BrdU), and mitosis (Mβphase), by the colchicineβarrest of
Mitotic activity in the duodenum of the rat and mouse exhibits a circadian periodicity with a peak in the rat between 1200 and 1500 hours and a sustained trough between 1800 and 0600. Scintillation counts revealed a similar rhythm in the total uptake of 3H-thymidine by the rat duodenum with a sustai