The passage of nutrients from the GI tract into the blood and lymph systems[1].


  1. ^ Restak, Richard; Bechtel, Stefan; Daniels, Patricia; Hitchcock, Susan Tyler; Gura, Trisha; Stein, Lisa and Thompson, John (2007). Body: The Complete Human. National Geographic Society. ISBN 9781426201288. 
Anatomy of an amiotic egg.svg This article is part of Project Glossary, a All Birds project that aims to write comprehensive articles on each term related to animals.

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