title: Pulmonary atelectasis in subjects breathing oxygen at sea level or at simulated altitude.
mesh_terms: D000531:Altitude; D018504:Ecological Systems, Closed; D006801:Humans; D008297:Male; D010100:Oxygen / Q000633:toxicity*; D001261:Pulmonary Atelectasis; D013902:Radiography, Thoracic; D012129:Respiratory Function Tests
chemical_list: D010100:Oxygen