title: Amino acid sequence changes in antigenic variants of type A influenza virus N2 neuraminidase.
mesh_terms: D000595:Amino Acid Sequence; D000956:Antigens, Viral; D000939:Epitopes; D014644:Genetic Variation; D009980:Influenza A virus / Q000201:enzymology / Q000235:genetics / Q000276:immunology*; D009439:Neuraminidase / Q000276:immunology*
chemical_list: D000956:Antigens, Viral; D000939:Epitopes; D009439:Neuraminidase