title: Letter: Biochemical lesion in vitamin-B12 deficiency in man.
mesh_terms: D004912:Erythrocytes / Q000378:metabolism*; D005492:Folic Acid / Q000097:blood*; D006400:Hematocrit; D006801:Humans; D014806:Vitamin B 12 Deficiency / Q000097:blood / Q000201:enzymology / Q000378:metabolism*
chemical_list: D005492:Folic Acid