title: Twins with two different fathers identified by HLA.
mesh_terms: D000017:ABO Blood-Group System; D005260:Female; D006680:HLA Antigens / Q000032:analysis*; D006242:Haptoglobins / Q000032:analysis; D006650:Histocompatibility Testing; D006801:Humans; D008297:Male; D010334:Paternity; D010641:Phenotype; D011247:Pregnancy; D011336:Probability; D012204:Rh-Hr Blood-Group System; D014427:Twins; D014429:Twins, Dizygotic
chemical_list: D000017:ABO Blood-Group System; D006680:HLA Antigens; D006242:Haptoglobins; D012204:Rh-Hr Blood-Group System