title: Complete sequence analysis shows that the hemagglutinins of the H0 and H2 subtypes of human influenza virus are closely related.
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D004279:DNA, Viral; D005814:Genes, Viral; D006389:Hemagglutinins, Viral / Q000235:genetics; D009980:Influenza A virus / Q000145:classification / Q000235:genetics / Q000276:immunology*
chemical_list: D004279:DNA, Viral; D006389:Hemagglutinins, Viral