title: Nucleotide sequence of the haemagglutinin gene of influenza virus A/England/321/77.
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D004279:DNA, Viral; D005814:Genes, Viral; D006389:Hemagglutinins, Viral / Q000235:genetics*; D009980:Influenza A virus / Q000235:genetics*
chemical_list: D004279:DNA, Viral; D006389:Hemagglutinins, Viral