title: [Changes in the virulence of colibacteria under the influence of various biological factors].
mesh_terms: D000818:Animals; D002417:Cattle; D046508:Culture Techniques; D004926:Escherichia coli / Q000254:growth & development / Q000472:pathogenicity*; D004927:Escherichia coli Infections / Q000382:microbiology; D006168:Guinea Pigs; D051379:Mice; D014774:Virulence
vernacular_title: Izmenenia v'v virulentnostta na kolibakteriite pod leistvieto na niakoi faktori