Vitamin B12, folate and nitrous oxide.
D000749:Anemia, Megaloblastic / Q000378:metabolism; D000818:Animals; D003857:Deoxyuridine / Q000378:metabolism; D005492:Folic Acid / Q000378:metabolism / Q000502:physiology*; D005561:Formates / Q000378:metabolism; D006410:Hematopoiesis / Q000187:drug effects; D006801:Humans; D008745:Methylation; D009609:Nitrous Oxide / Q000494:pharmacology*; D014805:Vitamin B 12 / Q000378:metabolism / Q000502:physiology*
D005561:Formates; C030544:formic acid; D005492:Folic Acid; D009609:Nitrous Oxide; D014805:Vitamin B 12; D003857:Deoxyuridine