title: Crossreaction of monoclonal anti-T-cell antibodies: implications for classifying B-cell leukemias.
abstract: Cell samples from 62 patients with B-cell leukemias (33 CLL, 8 IC, 6 PLL, 4 HCL, 2 ALL and 9 other NHL) were tested with a series of monoclonal antibodies (A50, T101, Lyt2, Leu 1, M203) directed against T cells and shown to crossreact with B-CLL. The results demonstrate a heterogeneity of B-cell leukemias as all typical cases of CLL were reactive whereas most other cases were negative. Using the fluorescence-activated cell sorter, a somewhat stronger reaction was seen in early or benign cases of CLL, compared to advanced cases. All B-cell leukemias tested expressed the Ia antigen.
mesh_terms: D000328:Adult; D000368:Aged; D000911:Antibodies, Monoclonal / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology; D003429:Cross Reactions; D005260:Female; D006801:Humans; D007943:Leukemia, Hairy Cell / Q000276:immunology; D007945:Leukemia, Lymphoid / Q000145:classification / Q000276:immunology*; D008223:Lymphoma / Q000276:immunology; D008297:Male; D008875:Middle Aged; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal