title: Malignant lymphoma with dual B and T cell markers. Analysis of the neoplastic cells with monoclonal antibodies directed against T cell subsets.
abstract: In the course of analyzing human lymphoma tissue with conventional surface marker techniques and with monoclonal antibodies directed against T cell subsets, five tumors were encountered with dual B and T cell determinants. All bore on their surface membrane IgM of kappa light chain type, complement receptors, and the Ia-like antigen. In each of the five cases, the neoplastic lymphocytes reacted with a monoclonal antibody that detects the sheep erythrocyte receptor (OKT11); all but one reacted with a monoclonal antibody for peripheral T cells (OKT3); and all but one reacted with a monoclonal antibody specific for either the inducer-helper (OKT4) or the cytotoxic-suppressor (OKT8) T cell subsets. In addition, lymphocytes from two of the five cases formed spontaneous rosettes with sheep erythrocytes (E-rosettes). These tumors with dual B and T surface characteristics were confined to human malignant lymphomas that originate from B lymphocytes of the follicle center.
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal; D001402:B-Lymphocytes / Q000276:immunology*; D002471:Cell Transformation, Neoplastic; D006041:Goats; D006801:Humans; D007938:Leukemia / Q000276:immunology; D007945:Leukemia, Lymphoid / Q000276:immunology; D007951:Leukemia, Myeloid / Q000276:immunology; D008223:Lymphoma / Q000276:immunology*; D008228:Lymphoma, Non-Hodgkin / Q000276:immunology; D051379:Mice; D008815:Mice, Inbred Strains; D011817:Rabbits; D011947:Receptors, Antigen, B-Cell; D012397:Rosette Formation; D012756:Sheep; D013601:T-Lymphocytes / Q000145:classification / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D011947:Receptors, Antigen, B-Cell