title: Variation in the membrane-insertion and "stalk" sequences in eight subtypes of influenza type A virus neuraminidase.
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D004247:DNA; D009980:Influenza A virus / Q000201:enzymology*; D046911:Macromolecular Substances; D008565:Membrane Proteins; D009439:Neuraminidase / Q000235:genetics
chemical_list: D046911:Macromolecular Substances; D008565:Membrane Proteins; D004247:DNA; D009439:Neuraminidase