Studies of antibodies to strains of influenza virus in persons of different ages in sera collected in a postepidemic period.
D000906:Antibodies; D000941:Antigens; D006801:Humans; D007251:Influenza, Human / Q000276:immunology*; D009975:Orthomyxoviridae
D000906:Antibodies; D000941:Antigens
ANTIGENS AND ANTIBODIES; INFLUENZA/immunology