title: The recognition and role of different classes of lymphocytes.
mesh_terms: D000361:Agammaglobulinemia / Q000276:immunology; D001402:B-Lymphocytes / Q000276:immunology; D002464:Cell Migration Inhibition; D003601:Cytotoxicity Tests, Immunologic; D006084:Graft Rejection; D006801:Humans; D007111:Immunity, Cellular; D007153:Immunologic Deficiency Syndromes / Q000276:immunology*; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000276:immunology*; D012882:Skin Tests; D013601:T-Lymphocytes / Q000276:immunology