title: Two monoclonal antibodies detecting allotypic determinants of HLA-A.
abstract: Three mouse hybridomas producing cytotoxic antibodies against HLA were established. By standard microcytotoxicity test against panels of normal controls, the antigen defined by MA-9 antibody (IgM) showed a good correlation with HLA-A9 alloantigen detected by conventional typing alloantisera (r = 1.0). Family studies also showed that MA-9 determinant segregated with HLA-A9. MA-10 antibody (IgM) reacted with all HLA-A10 positive lymphocyte donors and cross-reacted with two thirds of HLA-AW33 positive donors. Ml-1 antibody (IgG2a) reacted with all the panel cells tested and immunoprecipitated a molecule of 43,000 daltons from Nonidet P-40 lysates of 3H-glucosamine-labelled cells. The results showed that MA-9 and MA-10 antibodies can be used as routine tissue typing reagents.
mesh_terms: D000328:Adult; D000818:Animals; D000911:Antibodies, Monoclonal; D002648:Child; D003602:Cytotoxicity, Immunologic; D000939:Epitopes / Q000032:analysis*; D005260:Female; D006680:HLA Antigens / Q000276:immunology*; D015234:HLA-A Antigens; D006801:Humans; D006825:Hybridomas / Q000276:immunology; D007519:Isoantigens / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C / Q000276:immunology
chemical_list: D000911:Antibodies, Monoclonal; D000939:Epitopes; D006680:HLA Antigens; D015234:HLA-A Antigens; D007519:Isoantigens