title: Effect of fresh guinea-pig serum on the toxicity of Bordetella pertussis and Bordetella parapertussis.
mesh_terms: D000818:Animals; D001770:Blood Bactericidal Activity; D001884:Bordetella / Q000472:pathogenicity*; D001886:Bordetella pertussis / Q000472:pathogenicity*; D006168:Guinea Pigs / Q000097:blood*; D051379:Mice; D013997:Time Factors