title: Genetic diversity among avian influenza viruses.
mesh_terms: D000818:Animals; D001483:Base Sequence; D004372:Ducks; D005814:Genes, Viral; D014644:Genetic Variation; D009980:Influenza A virus / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D012367:RNA, Viral / Q000032:analysis / Q000235:genetics*
chemical_list: D012367:RNA, Viral