title: Antigenic variation in influenza viruses.
authors.forename: G M
authors.initials: GM
authors.lastname: Air
authors.forename: W G
authors.initials: WG
authors.lastname: Laver
authors.forename: R G
authors.initials: RG
authors.lastname: Webster
mesh_terms: D000956:Antigens, Viral / Q000235:genetics*; D005787:Gene Frequency; D014644:Genetic Variation; D006388:Hemagglutinins / Q000235:genetics / Q000276:immunology; D009439:Neuraminidase / Q000235:genetics / Q000276:immunology; D009975:Orthomyxoviridae / Q000145:classification / Q000235:genetics / Q000276:immunology*
chemical_list: D000956:Antigens, Viral; D006388:Hemagglutinins; D009439:Neuraminidase