title: [Changes in the structure of the M- and NS-genes in the process of influenza virus attenuation].
mesh_terms: D000818:Animals; D002642:Chick Embryo; D005814:Genes, Viral; D009980:Influenza A virus / Q000235:genetics* / Q000472:pathogenicity; D009841:Oligonucleotides / Q000235:genetics; D012367:RNA, Viral / Q000235:genetics; D014771:Virion / Q000235:genetics; D014774:Virulence
chemical_list: D009841:Oligonucleotides; D012367:RNA, Viral
vernacular_title: Izmeneniia v strukture M- i NS-genov v protsesse attenuatsii virusa grippa.