title: Manned test of a regenerative life support system.
mesh_terms: D000531:Altitude; D001274:Atmospheric Pressure; D018504:Ecological Systems, Closed; D004572:Electrolysis; D006801:Humans; D006813:Humidity; D008021:Life Support Systems; D008297:Male; D010100:Oxygen / Q000138:chemical synthesis; D013026:Space Flight; D013696:Temperature; D014881:Water Supply
chemical_list: D010100:Oxygen