title: Hereditary abnormal transcobalamin II previously diagnosed as congenital dihydrofolate reductase deficiency.
mesh_terms: D000328:Adult; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D013762:Tetrahydrofolate Dehydrogenase / Q000172:deficiency*; D014155:Transcobalamins / Q000378:metabolism*; D014805:Vitamin B 12 / Q000097:blood
chemical_list: D014155:Transcobalamins; D013762:Tetrahydrofolate Dehydrogenase; D014805:Vitamin B 12