title: Four further families informative for 1q and the Duffy blood group.
mesh_terms: D001789:Blood Group Antigens; D002874:Chromosome Mapping; D002900:Chromosomes, Human, 1-3; D004375:Duffy Blood-Group System; D005260:Female; D006801:Humans; D008297:Male; D010375:Pedigree
chemical_list: D001789:Blood Group Antigens; D004375:Duffy Blood-Group System