title: Gene deletion in hereditary persistence of fetal hemoglobin (HPFH) and delta beta thalassemia.
mesh_terms: D002872:Chromosome Deletion; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D005319:Fetal Hemoglobin / Q000096:biosynthesis / Q000235:genetics*; D006402:Hematologic Diseases / Q000097:blood / Q000150:complications / Q000235:genetics*; D006801:Humans; D011995:Recombination, Genetic; D013789:Thalassemia / Q000097:blood / Q000150:complications*
chemical_list: D005319:Fetal Hemoglobin