Nitrous oxide and vitamin B12.
D006801:Humans; D006987:Hypesthesia / Q000139:chemically induced; D009609:Nitrous Oxide / Q000009:adverse effects*; D010523:Peripheral Nervous System Diseases / Q000139:chemically induced; D014806:Vitamin B 12 Deficiency / Q000139:chemically induced*
D009609:Nitrous Oxide