title: Lymphocyte populations and cellular immune reactions in juvenile rheumatoid arthritis.
abstract: Ten patients with juvenile rheumatoid arthritis and age- and sex-matched healthy controls were investigated in pairs. The patients were found to have both normal proportions and normal absolute numbers of T lymphocytes, B lymphocytes, and the Fc-receptor-bearing lymphoid cells in peripheral blood. No abnormality of mitogen-induced lymphocyte transformation was observed. Lymphocyte-mediated cytotoxicity induced by phytohemagglutinin (PHA) or anti-target cell antibodies was also found to be normal. As in an earlier study, impaired delayed hypersensitivity by skin testing was observed in the patient group, thus indicating a dissociation between in vivo and in vitro parameters of lymphoid cell function.
mesh_terms: D000942:Antigens, Bacterial; D001171:Arthritis, Juvenile / Q000097:blood / Q000276:immunology*; D001666:Binding Sites, Antibody; D003601:Cytotoxicity Tests, Immunologic; D006968:Hypersensitivity, Delayed; D007111:Immunity, Cellular; D008213:Lymphocyte Activation; D008934:Mitogens / Q000494:pharmacology; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000942:Antigens, Bacterial; D008934:Mitogens