title: Origins of pandemic influenza.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000956:Antigens, Viral; D002642:Chick Embryo; D004196:Disease Outbreaks; D004372:Ducks; D005827:Genetics, Microbial; D006385:Hemagglutination Inhibition Tests; D006389:Hemagglutinins, Viral / Q000032:analysis; D006801:Humans; D007125:Immunogenetics; D007251:Influenza, Human / Q000453:epidemiology / Q000382:microbiology* / Q000662:veterinary; D009439:Neuraminidase / Q000032:analysis; D009975:Orthomyxoviridae / Q000201:enzymology / Q000276:immunology*; D010455:Peptides / Q000032:analysis; D011201:Poultry Diseases / Q000382:microbiology; D011995:Recombination, Genetic; D013552:Swine; D014422:Turkeys
chemical_list: D000956:Antigens, Viral; D006389:Hemagglutinins, Viral; D010455:Peptides; D009439:Neuraminidase