title: [Occurrence of antigenic variants of influenza type A H1N1 and H3N2 in swine].
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000032:analysis*; D053118:Influenza A Virus, H1N1 Subtype; D053122:Influenza A Virus, H3N2 Subtype; D009980:Influenza A virus / Q000276:immunology*; D009976:Orthomyxoviridae Infections / Q000276:immunology / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000276:immunology*
chemical_list: D000956:Antigens, Viral
vernacular_title: Badania nad wystepowaniem wśród świń wariantów antygenowych grypy typu A H1N1 i H3N2.