Source:http://linkedlifedata.com/resource/umls/id/C0225387
NCI: The air that moves out of the chest during expiration. It contains a higher percentage of carbon dioxide and a lower percentage of oxygen compared to the inhaled air. (NCI),NCI: The air that moves out of the chest during expiration. It contains a higher percentage of carbon dioxide and a lower percentage of oxygen compared to the inhaled air.