title: [Evolution of the influenza A2 virus].
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D005075:Biological Evolution; D001769:Blood / Q000382:microbiology; D002645:Chickens; D004739:England; D004912:Erythrocytes / Q000382:microbiology; D006385:Hemagglutination Inhibition Tests; D006387:Hemagglutination, Viral; D051379:Mice; D009439:Neuraminidase / Q000378:metabolism; D009975:Orthomyxoviridae / Q000201:enzymology / Q000276:immunology / Q000302:isolation & purification / Q000472:pathogenicity; D012641:Selection, Genetic; D013696:Temperature; D014586:USSR; D014774:Virulence; D014779:Virus Replication
chemical_list: D000956:Antigens, Viral; D009439:Neuraminidase
vernacular_title: Kvoprosu évoliutsii virusa grippa A2