title: Haemophilus infections in chickens. 3. Immunogenicity of serotypes 1 and 2 strains of Haemophilus paragallinarum.
mesh_terms: D000818:Animals; D002645:Chickens; D006190:Haemophilus / Q000276:immunology*; D006192:Haemophilus Infections / Q000276:immunology / Q000662:veterinary*; D011201:Poultry Diseases / Q000276:immunology*; D012703:Serotyping