title: A screening program for anti-DR typing reagents.
abstract: A total of 694 sera have been tested in a screening program aimed at identifying monospecific reagents for HLA--DR typing. All sera were first tested on a panel of enriched B and T cells without absorption on platelets. Only sera reacting more frequently on B than on T lymphocytes were absorbed on platelets and retested on the panel. This procedure saved a considerable amount of platelets and proved to be reasonably efficient. One-hundred-and-fifty sera were found to contain an anti-B cell antibody. Significantly less frequent B cell reactivity was found when HLA--A, --B, --C antibodies could not be detected. Twenty-five sera were demonstrated to be specific for well-defined DR antigens.
mesh_terms: D000888:Antibodies, Anti-Idiotypic; D001402:B-Lymphocytes / Q000276:immunology; D005260:Female; D006680:HLA Antigens; D006650:Histocompatibility Testing; D006801:Humans; D011247:Pregnancy; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000888:Antibodies, Anti-Idiotypic; D006680:HLA Antigens