title: T-cell subpopulations in chronic lymphocytic leukemia: abnormalities in distribtuion and in in vitro receptor maturation.
abstract: Purified human thymus-derived (T) lymphocytes were analyzed by detection of Fc receptors for either IgG or IgM in healthy controls and in patients with chronic lymphocytic leukemia (CLL). There was a significant and persistent increase in the numbers of T cells bearing receptors for IgG (Fc gamma) in CLL patients in comparison to the controls. After an in vitro culture period, there was a significantly decreased appearance of cells with IgM receptors (Fcmu) in CLL patients in comparison to the control group. These results indicate an imbalance in circulating T-cell subpopulations for CLL patients. In addition, an in vitro defect in CLL T-cell membrane receptor appearance is present.
mesh_terms: D001665:Binding Sites; D006801:Humans; D007141:Immunoglobulin Fc Fragments; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007945:Leukemia, Lymphoid / Q000276:immunology / Q000473:pathology*; D013601:T-Lymphocytes / Q000276:immunology* / Q000473:pathology
chemical_list: D007141:Immunoglobulin Fc Fragments; D007074:Immunoglobulin G; D007075:Immunoglobulin M