Immune function in the elderly.
D000368:Aged; D000375:Aging; D000818:Animals; D000917:Antibody Formation; D001323:Autoantibodies; D006801:Humans; D007107:Immune System / Q000502:physiology*; D008213:Lymphocyte Activation; D010586:Phagocytes / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology; D015032:Zinc / Q000172:deficiency
D001323:Autoantibodies; D015032:Zinc