title: Megaloblastic haemopoiesis after multiple short-term exposure to nitrous oxide.
mesh_terms: D013766:5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase / Q000037:antagonists & inhibitors; D000208:Acute Disease; D000328:Adult; D000748:Anemia, Macrocytic / Q000139:chemically induced*; D000749:Anemia, Megaloblastic / Q000139:chemically induced* / Q000150:complications; D004338:Drug Combinations / Q000009:adverse effects; D004920:Erythropoiesis / Q000187:drug effects; D006801:Humans; D008297:Male; D009609:Nitrous Oxide / Q000009:adverse effects*; D010100:Oxygen / Q000009:adverse effects*; D010146:Pain / Q000188:drug therapy; D011164:Porphyrias / Q000150:complications; D013997:Time Factors
chemical_list: D004338:Drug Combinations; C001147:Entonox; D013766:5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase; D009609:Nitrous Oxide; D010100:Oxygen