title: Possibility of a third sublocus.
mesh_terms: D000483:Alleles; D000936:Antigen-Antibody Complex; D000941:Antigens; D000939:Epitopes; D005838:Genotype; D006648:Histocompatibility; D006650:Histocompatibility Testing; D006801:Humans; D007125:Immunogenetics; D066298:In Vitro Techniques; D016030:Kidney Transplantation; D007962:Leukocytes / Q000276:immunology; D008214:Lymphocytes / Q000276:immunology; D010641:Phenotype; D014019:Tissue Donors; D014181:Transplantation Immunology; D014184:Transplantation, Homologous
chemical_list: D000936:Antigen-Antibody Complex; D000941:Antigens; D000939:Epitopes