title: Antigenic analysis of recent influenza virus isolates.
mesh_terms: D000956:Antigens, Viral / Q000276:immunology*; D006801:Humans; D009980:Influenza A virus / Q000145:classification / Q000276:immunology*; D009981:Influenza B virus / Q000145:classification / Q000276:immunology*
chemical_list: D000956:Antigens, Viral