title: [Evolution of the hemagglutinin gene of human influenza A virus H3 subtype].
abstract: An evolutional tree of human influenza viruses of the H3N2-subtype is suggested on the basis of combined published primary structures of the hemagglutinin HA1-subunit. Possible differences between natural and sequenced structures are discussed. A tendency to reversions in the course of antigenic draft within the subtype has been revealed to support the hypothesis of limited antigenic evolution within a single subtype.
mesh_terms: D005075:Biological Evolution; D005814:Genes, Viral; D006389:Hemagglutinins, Viral / Q000235:genetics*; D009980:Influenza A virus / Q000235:genetics*
chemical_list: D006389:Hemagglutinins, Viral
vernacular_title: Evolutsiia gena gemaggliutinina podtipa H3 virusa grippa A cheloveka.