Section 40
Chapter 39,508

Changes in the mitotic activity of the corneal epithelium of white rats following coolong of the animals at different times of the day

Simon, N.B.; Timoshin, S.S.; Alekseenko, S.A.

Biulleten' Eksperimental'noi Biologii i Meditsiny 82(11): 1371-1373


ISSN/ISBN: 0365-9615
PMID: 1016725
Accession: 039507070

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A study was made of the influence of moderate hypothermia on the mitotic activity of albino rat corneal epithelium. The animals were cooled by the contact method for one hour to 28 degrees C; such procedure was conducted at 6 a.m., at noon, and at 6 p.m.; the epithelial reaction to cooling proved to depend on the time, the greatest suppression of mitotic activity (14-fold) occurring at daytime 3 hours after the cooling. A tendency to normalization of cell division was observed 6 and 12 hours after the cooling. The number of mitoses decreased 3 hours after the evening cooling, no changes in the mitotic activity in 3 and 6 hours after the morning cooling; cell division was found to be suppressed in 12 hours.

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