Campbell Biology (10th Edition)

Published by Pearson
ISBN 10: 0321775651
ISBN 13: 978-0-32177-565-8

Chapter 43 - 43.1 - Concept Check - Page 952: 2

Answer

Vertebrate TLR ligands are exogenous.

Work Step by Step

The ligands for most signal transduction pathways are endogenous, meaning they are produced by the body. These TLR ligands, however, originate outside the body and are not produced by the organism itself.
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