title: Strain differences in virulence of group B streptococci.
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000276:immunology; D006801:Humans; D009895:Opsonin Proteins / Q000276:immunology; D011135:Polysaccharides, Bacterial / Q000276:immunology; D051381:Rats; D011919:Rats, Inbred Strains; D012703:Serotyping; D013290:Streptococcal Infections / Q000276:immunology; D013292:Streptococcus agalactiae / Q000145:classification / Q000472:pathogenicity*; D014774:Virulence
chemical_list: D000907:Antibodies, Bacterial; D009895:Opsonin Proteins; D011135:Polysaccharides, Bacterial