[Distribution of the antibodies for influenza A-Hong Kong and A-Eq-2 among the aged].
D000367:Age Factors; D000368:Aged; D000906:Antibodies / Q000032:analysis*; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007251:Influenza, Human / Q000276:immunology*; D007564:Japan; D008875:Middle Aged
D000906:Antibodies