Serological diagnosis of influenza:  antibody levels in relation to the concentration of virus used in the hemagglutination-inhibition test.
WOOLRIDGE
R L
RL
CRAWFORD
Y E
YE
D006384:Hemagglutination; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007251:Influenza, Human / Q000175:diagnosis*; D012698:Serologic Tests