title: The normal alveolar-arterial oxygen-tension gradient in man.
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000388:Air; D000403:Airway Resistance; D001158:Arteries; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000032:analysis / Q000097:blood*; D010313:Partial Pressure; D011650:Pulmonary Alveoli / Q000502:physiology*; D011652:Pulmonary Circulation; D012119:Respiration; D014692:Ventilation-Perfusion Ratio; D014797:Vital Capacity
chemical_list: D010100:Oxygen