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Definition of Pulmonary vein

Pulmonary vein: One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. The pulmonary veins are the only veins that carry bright-red oxygenated blood.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=5130
Last Editorial Review: 3/19/2012

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