STUDIO DELL’ECOSISTEMA INTESTINALE DI TOPO IN SEGUITO A SOMMINISTRAZIONE DI UN VACCINO ORALE POLIVALENTE

Bacterial antigens orally administered, have been showed by many authors capable to stimulate immunitary system, hinding thus the pathogen flora from gut-colonization. Founding on these findings, AA. og the present paper intend to point out by collected microbial data and M.E.S. photos, the activity of an oral polyvalent vaccine made by lysates strains of E.coli, enterococci, staphilicocci and P. vulagris, on normal intestinal flora of mice contemporaneously administered with a pathogenic strains of Salmonella enteritidis.Vaccine showed himself tobe able enough to limit alteration of intestinal flora due to infection by the pathogens.