Much ado about nothing: trace gaseous metabolites in the closed circuit.
D000096:Acetone / Q000032:analysis*; D000393:Air Pollutants / Q000032:analysis; D000758:Anesthesia / Q000009:adverse effects; D006801:Humans; D008452:Maximum Allowable Concentration; D008697:Methane / Q000032:analysis*; D013366:Submarine Medicine
D000393:Air Pollutants; D000096:Acetone; D008697:Methane