title: Antigenic and genetic characteristics   of H5N1 viruses and candidate   vaccine viruses developed for   potential use in human vaccines,   February 2009.
mesh_terms: D000956:Antigens, Viral / Q000235:genetics / Q000276:immunology; D006801:Humans; D053124:Influenza A Virus, H5N1 Subtype / Q000235:genetics / Q000276:immunology*; D007252:Influenza Vaccines / Q000235:genetics / Q000276:immunology*; D007251:Influenza, Human / Q000276:immunology / Q000517:prevention & control* / Q000821:virology
chemical_list: D000956:Antigens, Viral; D007252:Influenza Vaccines