Folic acid and xanthine oxidase.
D005492:Folic Acid / Q000008:administration & dosage*; D006801:Humans; D007880:Legislation, Drug; D014481:United States; D014969:Xanthine Oxidase / Q000037:antagonists & inhibitors*
D005492:Folic Acid; D014969:Xanthine Oxidase