title: Alveolar-arterial PCO 2  differences during rebreathing in chronic airways obstruction.
mesh_terms: D000368:Aged; D000402:Airway Obstruction / Q000503:physiopathology*; D002245:Carbon Dioxide / Q000032:analysis / Q000097:blood*; D002908:Chronic Disease; D006801:Humans; D008875:Middle Aged; D010100:Oxygen / Q000032:analysis / Q000097:blood*; D010313:Partial Pressure; D010993:Plethysmography, Whole Body; D011650:Pulmonary Alveoli; D011652:Pulmonary Circulation; D012119:Respiration; D012146:Rest
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen