title: [Features of a strain of influenza A2 virus isolated during the 1969 epidemic in Leningrad].
mesh_terms: D000818:Animals; D000941:Antigens / Q000032:analysis; D002642:Chick Embryo; D004196:Disease Outbreaks; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007251:Influenza, Human / Q000382:microbiology*; D009093:Mucus / Q000382:microbiology; D009500:Neutralization Tests; D009975:Orthomyxoviridae / Q000254:growth & development / Q000276:immunology / Q000302:isolation & purification; D012426:Russia; D014776:Virus Cultivation
chemical_list: D000941:Antigens
vernacular_title: Osobennosti shtammov virusa gripa A2, vydelennykh v period épidemii 1969 g. v Leningrade.