title: Approaches to cloning the genes at the human blood group ABO locus.
mesh_terms: D000017:ABO Blood-Group System / Q000235:genetics*; D000483:Alleles; D003001:Cloning, Molecular; D004247:DNA / Q000235:genetics; D005700:Galactosyltransferases / Q000235:genetics; D005796:Genes; D006801:Humans; D017350:N-Acetylgalactosaminyltransferases
chemical_list: D000017:ABO Blood-Group System; D004247:DNA; D005700:Galactosyltransferases; D017350:N-Acetylgalactosaminyltransferases; C003742:UDPgalactosamine-galactose acetylgalactosaminyltransferase