title: [Biological properties of strains of influenza virus that caused the epidemic of 1974-1975].
abstract: The biological features of the strains of influenza virus isolated in the 1974-1975 epidemic were compared with those of the strains which had circulated earlier. Most of the properties examined (toxicity for mice, sensitivity to gamma-inhibitors, thermostability of hemagglutinin and neuraminidase) in strains isolated in 1974-1975 did not differ from those in strains of previous epidemics. Clear-cut differences between the new and earlier strains were found in the studies of their chromatographic profiles.
mesh_terms: D000818:Animals; D000998:Antiviral Agents / Q000494:pharmacology; D002848:Chromatography, DEAE-Cellulose; D004196:Disease Outbreaks; D006389:Hemagglutinins, Viral; D006358:Hot Temperature; D006801:Humans; D009980:Influenza A virus / Q000302:isolation & purification / Q000472:pathogenicity; D007251:Influenza, Human / Q000382:microbiology*; D051379:Mice; D009439:Neuraminidase; D014586:USSR
chemical_list: D000998:Antiviral Agents; D006389:Hemagglutinins, Viral; D009439:Neuraminidase
vernacular_title: Biologicheskie osobennosti shtammov virusa grippa, obuslovivshikh épidemiiu 1974-1975.