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May 19, 2013
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Definition of Tube

Tube: A long hollow cylinder. There are many tube-like structures in the human body, such as the auditory tube (Eustachian tube) in the ear.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=6297
Last Editorial Review: 4/27/2011 5:27:15 PM

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