[Quantitative patterns in changes in the intestinal microflora of irradiated mice].

Experiments were conducted on 3 groups of mice, gamma-irradiated in doses of 900, 600 and 300 r. Development of acute radiation sickness was accompained by development of intestinal dysbacteriosis. Characteristic was reduction of lactobacilli content and increase in the content of purulent microbes (E. coli, clostridia, Proteus, and enterococcus) in the large intestine, and an increase of enterococcus and Proteus content in the small intestine. Changes in the microbial count in the intestine, depending on the time lapse after the irradiation can be represented as a formula of linear dependence; this permitted to compare the rate of changes in the intestinal content of the microbes during the development of acute radiation sickness.