Collected are the data on sanitary-hygienic and parasitological aspects of rock pigeon vital activity in Saratov. Distinguished are the types of pigeon exterior pathologies. their character and frequency of occurrence. Synanthropic population and nests of the birds are searched for the presence of helminthes and ectoparasites. https://nooemstwa1oia.wikigop.com/1349321/cytotoxic_immune_response_to_a_xenogeneic_bioartificial_liver