[Retrospective identification of time of isolation of variants of A/Bangkok/1/79 and A/Beijing/2/79 group of H3N2 influenza virus].
D000818:Animals; D002645:Chickens; D006385:Hemagglutination Inhibition Tests; D053122:Influenza A Virus, H3N2 Subtype; D009980:Influenza A virus / Q000276:immunology / Q000302:isolation & purification*; D013997:Time Factors