[Cells of the aged. 6. Immunocompetent cells (author's transl)].
D000328:Adult; D000368:Aged; D000375:Aging; D000818:Animals; D000921:Antibody-Producing Cells / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D006801:Humans; D008213:Lymphocyte Activation; D051379:Mice; D013601:T-Lymphocytes / Q000276:immunology