PERETTS Leopold Genrikhovich (1891 — 1961) — the Soviet microbiologist, professor (1932).
In 1919 ended medical f-t Tomsk un-that. Managed department of microbiology in Leningrad sanitary and hygienic medical in-those (1932 — 1936), 2 Leningrad medical in-those (1936 — 1939), in Sverdlovsk medical in-those (1942 — 1952); along with 1943 was the head of experimental department and the deputy director by a scientific part Sverdlovsk research in-that epidemiology and microbiology. L. G. Peretts published apprx. 120 scientific works devoted to questions of microbiology and infectious immunology. He is a founder of domestic school of researchers of microflora of a human body; it described structure of microflora of open cavities of a human body in the conditions of norm and pathology. Its works on studying of intestinal microflora in which, developing the ideas I. I. Mechnikova, L. G, Peretts established that normal intestinal microflora possesses protective functions have special value, and disturbances of structure of microflora lead to dysbacteriosis. For normalization of intestinal microflora (1930) biological bacteritic drug are offered them kolibakterin (see) which basis is the colibacillus (a strain of M-17) having the expressed antagonistic properties concerning pathogenic and opportunistic microorganisms.
L. G. Peretts's ideas on creation biol, drugs from bifidobacteria, lactobacilli, complex drugs from bifidobacteria and colibacillus (a strain of M-17) are carried out by his followers; such drugs as bifidumbacterium, laktobakterin, are implemented in practice of health care.
Works: coli-antagonism and coli-therapy, JI., 1935; Value of normal microflora for a human body, M., 1955.
F. L. Vilshanskaya.