title: Ventilation-perfusion relationships and gas exchange.
mesh_terms: D001249:Asthma / Q000503:physiopathology; D003201:Computers; D003550:Cystic Fibrosis / Q000503:physiopathology; D006801:Humans; D008171:Lung Diseases / Q000503:physiopathology; D008722:Methods; D011650:Pulmonary Alveoli / Q000502:physiology; D011658:Pulmonary Fibrosis / Q000503:physiopathology; D011865:Radioisotope Dilution Technique; D011868:Radioisotopes; D012119:Respiration; D012507:Sarcoidosis / Q000503:physiopathology; D012711:Serum Albumin, Radio-Iodinated; D013147:Spirometry; D013667:Technetium; D014692:Ventilation-Perfusion Ratio; D014978:Xenon
chemical_list: D011868:Radioisotopes; D012711:Serum Albumin, Radio-Iodinated; D014978:Xenon; D013667:Technetium