Atelectasis: Effect on distribution of ventilation and perfusion.
D000400:Air Sacs / Q000098:blood supply; D000818:Animals; D002302:Cardiac Output; D004285:Dogs; D006371:Helium; D010100:Oxygen / Q000378:metabolism; D010101:Oxygen Consumption; D010477:Perfusion; D001261:Pulmonary Atelectasis / Q000097:blood*; D012119:Respiration
D006371:Helium; D010100:Oxygen