title: The recombination fraction of the HL-A system.
mesh_terms: D000328:Adult; D000368:Aged; D002648:Child; D003718:Denmark; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006649:Histocompatibility Antigens; D006801:Humans; D007125:Immunogenetics; D008297:Male; D008875:Middle Aged; D009664:Norway; D011995:Recombination, Genetic; D013548:Sweden
chemical_list: D006649:Histocompatibility Antigens