title: A crossover in the HL-A system traced through three generations.
mesh_terms: D005260:Female; D006680:HLA Antigens; D006649:Histocompatibility Antigens; D006650:Histocompatibility Testing; D006801:Humans; D008297:Male; D010375:Pedigree; D011995:Recombination, Genetic
chemical_list: D006680:HLA Antigens; D006649:Histocompatibility Antigens