title: Gas transport in an asymmetrical acinus.
mesh_terms: D004058:Diffusion; D006371:Helium / Q000378:metabolism; D006801:Humans; D008168:Lung / Q000502:physiology*; D008954:Models, Biological; D010100:Oxygen / Q000378:metabolism; D012123:Pulmonary Ventilation; D012119:Respiration; D013459:Sulfur Hexafluoride / Q000378:metabolism; D013997:Time Factors
chemical_list: D006371:Helium; D010100:Oxygen; D013459:Sulfur Hexafluoride