title: Evidence for monoclonal proliferation in prolymphocytic leukemia of T-cell orgin. A cytogenetic and Quantitative immunoautoradiographic analysis.
abstract: B- and T-cell markers were studied in a patient with prolymphocytic leukemia, a rare variant of chronic lymphocytic leukemia. Thymus-derived features were identified on the membrane of the neoplastic lymphocytes using the following cellsurface markers: Heterologous T-cell antigen, sheep erythrocyte receptor, surface immunoglobulin, complement receptor, Fc receptor and mouse erythrocyte receptor. Cytogenetic studies of leukemic cells from unstimulated and mitogen-stimulated cultures revealed a consistent karyotype characterized by marker chromosomes and a decreased chromosome number, whereas chromosomal analysis of hair root cells yielded a normal karyotype. A uniform expression of T-cell antigens measured on single leukemic cells by quantitative microphotometric immunoautoradiography correlated with the cytogenetic findings which are compatible with a descent from one progenitor cell.
mesh_terms: D000368:Aged; D001345:Autoradiography; D002462:Cell Membrane; D003165:Complement System Proteins; D006801:Humans; D007136:Immunoglobulins; D007621:Karyotyping; D007945:Leukemia, Lymphoid / Q000473:pathology*; D008297:Male; D013601:T-Lymphocytes / Q000473:pathology*
chemical_list: D007136:Immunoglobulins; D003165:Complement System Proteins