title: Antigenic memory in man in response to sequential infections with influenza A viruses.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D000917:Antibody Formation; D002642:Chick Embryo / Q000276:immunology; D002648:Child; D003429:Cross Reactions; D000939:Epitopes; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007156:Immunologic Memory; D007251:Influenza, Human / Q000276:immunology*; D008875:Middle Aged; D009975:Orthomyxoviridae / Q000276:immunology*
chemical_list: D000939:Epitopes