title: [Expression of HLA-DR structure and a membrane-specific antigen by a granulocytopoietic line of acute leukemic blast cells].
abstract: Blast cells from peripheral blood of 32 patients with acute leukemia were tested for their ability to react with a monoclonal antibody (D1.B6) specific for HLA-DR surface antigen. In order to evaluate the degree of leukemic cell differentiation a monoclonal antibody (R1.B19) specific for the granulocytopoietic lineage was also employed. The results demonstrated that a considerable proportion of blast cell populations expressed the HLA-DR antigen, while only a small fraction of cells expressed the myeloid antigen.
mesh_terms: D000911:Antibodies, Monoclonal / Q000276:immunology*; D000954:Antigens, Surface / Q000276:immunology; D002454:Cell Differentiation; D002460:Cell Line; D006098:Granulocytes / Q000276:immunology; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D007938:Leukemia / Q000276:immunology*; D007962:Leukocytes / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000954:Antigens, Surface; D006684:HLA-DR Antigens; D000949:Histocompatibility Antigens Class II
vernacular_title: Espressione della struttura HLA-DR e di un antigene di membrana specifico per la linea granulocitopoietica sui blasti di leucemia acuta.