[Species composition of intestinal lactoflora of healthy rhesus monkeys].

The results of the study of the species composition of the fecal microflora of 15 healthy rhesus macaques, from whom 204 strains of lactobacilli have been isolated and identified, are presented. The intestinal microflora has been shown to include different species, subspecies and biovars of homo- and heterofermentative lactobacilli and to possess definite individual properties. L.

[Lactobacillus flora and colonization resistance].

Lactobacillus flora of healthy persons and the properties influencing the protective function of lactobacilli are described. It was shown that the species and quantitative composition of the Lactobacillus flora in healthy persons was characterized by individual features and the Lactobacillus flora of separate microbiotopes was different. Furthermore, the properties defining the protective function of lactobacilli in the host: colonization capacity, direct antimicrobial activity and interference with other protective mechanisms were also different in separate species and even strains.

[Antibiotic sensitivity of Lactobacilli from the digestive tract of the crews of Soiuz-13 and Saliut-4].

Sensitivity to 19 antibiotics of 411 lactobacillus strains isolated from the saliva and feces of crewmembers who made 8-, 30- and 63-day flights was determined. Antibiotic sensitivity remained unchanged even in the 63-day flight. The antibiotics tested produced different effects on the lactoflora that varied from gentle--polymyxin and gentamycin, less gentle--neomycin and monomycin, to hazardous--penicillin and erythromycin, then rifampicin and levomycetin, and, finally, tetracycline and oleandomycin.