title: Influenza A viruses: combinations of hemagglutinin and neuraminidase subtypes isolated from animals and other sources.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000145:classification*; D001717:Birds / Q000382:microbiology; D000939:Epitopes; D006389:Hemagglutinins, Viral / Q000145:classification*; D006736:Horses / Q000382:microbiology; D006801:Humans; D009980:Influenza A virus / Q000145:classification* / Q000276:immunology; D009439:Neuraminidase / Q000276:immunology*; D013552:Swine / Q000382:microbiology; D009626:Terminology as Topic
chemical_list: D000956:Antigens, Viral; D000939:Epitopes; D006389:Hemagglutinins, Viral; D009439:Neuraminidase