Nitrous oxide and vitamin B12.
D000818:Animals; D003857:Deoxyuridine / Q000037:antagonists & inhibitors; D004791:Enzyme Inhibitors / Q000494:pharmacology; D006801:Humans; D009609:Nitrous Oxide / Q000494:pharmacology*; D051381:Rats; D014805:Vitamin B 12 / Q000378:metabolism*
D004791:Enzyme Inhibitors; D009609:Nitrous Oxide; D014805:Vitamin B 12; D003857:Deoxyuridine