title: Letter: Vitamin-B12 deficiency.
mesh_terms: D005492:Folic Acid / Q000096:biosynthesis / Q000378:metabolism; D005971:Glutamates / Q000378:metabolism; D006801:Humans; D014806:Vitamin B 12 Deficiency / Q000378:metabolism* / Q000473:pathology
chemical_list: D005971:Glutamates; D005492:Folic Acid