title: Multiday exposure to 5.2 per cent O 2  at 4 ATA. Scope of program.
mesh_terms: D000222:Adaptation, Physiological; D000328:Adult; D000403:Airway Resistance; D001273:Atmosphere Exposure Chambers; D001274:Atmospheric Pressure; D001774:Blood Chemical Analysis; D001775:Blood Circulation; D001810:Blood Volume; D001826:Body Fluids; D002245:Carbon Dioxide; D004242:Diving; D004781:Environmental Exposure; D006371:Helium; D006801:Humans; D007222:Inert Gas Narcosis; D008168:Lung / Q000502:physiology; D008297:Male; D009584:Nitrogen; D010100:Oxygen; D011187:Posture; D012119:Respiration; D012623:Seawater; D013997:Time Factors
chemical_list: D002245:Carbon Dioxide; D006371:Helium; D009584:Nitrogen; D010100:Oxygen