title: Antigenic analysis of influenza A virus surface antigens: considerations for the nomenclature of influenza virus.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000032:analysis*; D006389:Hemagglutinins, Viral / Q000032:analysis; D006736:Horses; D006801:Humans; D009980:Influenza A virus / Q000145:classification / Q000276:immunology*; D009439:Neuraminidase / Q000276:immunology; D012703:Serotyping; D009626:Terminology as Topic
chemical_list: D000956:Antigens, Viral; D006389:Hemagglutinins, Viral; D009439:Neuraminidase