A non-transmissible cytopathogenic effect of influenza virus in tissue culture accompanied by formation of non-infectious hemagglutinins.
D000941:Antigens; D006384:Hemagglutination; D006388:Hemagglutinins; D009975:Orthomyxoviridae / Q000208:ethnology*
D000941:Antigens; D006388:Hemagglutinins
HEMAGGLUTINATION; INFLUENZA VIRUSES/culture