title: A case of twin chimerism.
abstract: A case of twin chimerism is presented and shown by cytogenetic studies, red cell grouping, and white cell HL-A typing. The sex of each twin is confirmed by examination of buccal smears and their chimeric state is confirmed by non-reactivity in the mixed lymphocyte culture system. The results of these investigations are discussed.
mesh_terms: D002678:Chimera; D005260:Female; D006680:HLA Antigens; D006801:Humans; D007223:Infant; D007959:Lymphocyte Culture Test, Mixed; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D009030:Mosaicism; D011247:Pregnancy; D014427:Twins; D014429:Twins, Dizygotic
chemical_list: D006680:HLA Antigens