title: Preliminary review of D222G amino acid substitution in the haemagglutinin of pandemic influenza A (H1N1) 2009 viruses.
mesh_terms: D019943:Amino Acid Substitution; D019267:Hemagglutinin Glycoproteins, Influenza Virus / Q000235:genetics*; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000235:genetics*; D007251:Influenza, Human / Q000821:virology*; D009154:Mutation
chemical_list: D019267:Hemagglutinin Glycoproteins, Influenza Virus