[Seasonal and circadian fluctuations of the biochemical indices of the blood in mice].

Seasonal (in January, April, July, October) changes of aspartate aminotransferase (AST), alanine aminotransferase (ALT), protein, bilirubin, glucose, cholesterol, creatinine, blood urea nitrogen, Cl-, K+, Na+ content were studied in the blood plasma of mice at different time of day (6 p. m., midnight, 6 a.

[Chronosensitivity to absolute hypercapnia in various light regimens].

The studies of mice on the natural regimen of day and night alterations have revealed a daily rhythm of hypercapnia toxicity, with the maximum sensitivity observed at 6 a.m. and the minimum sensitivity at 6 p.