title: "Shunt" fractions using O 2  versus N 2 .
mesh_terms: D008954:Models, Biological; D009584:Nitrogen / Q000097:blood*; D010100:Oxygen / Q000097:blood*; D011650:Pulmonary Alveoli / Q000502:physiology; D011652:Pulmonary Circulation; D014692:Ventilation-Perfusion Ratio
chemical_list: D009584:Nitrogen; D010100:Oxygen