Age-associated changes in the immune response.
D000375:Aging; D000917:Antibody Formation; D006801:Humans; D007109:Immunity; D007111:Immunity, Cellular; D007070:Immunoglobulin A / Q000032:analysis; D007074:Immunoglobulin G / Q000032:analysis; D008214:Lymphocytes / Q000276:immunology / Q000502:physiology; D008875:Middle Aged; D013950:Thymus Gland / Q000276:immunology / Q000502:physiology
D007070:Immunoglobulin A; D007074:Immunoglobulin G