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islets of Langerhans

Pronunciation: lahng'er-hahnz

Definition: cellular masses consisting of several to several hundred cells lying in the interstitial tissue of the pancreas; they are composed of five different cell types that make up the endocrine portion of the pancreas and are the sources of insulin, glucagon, somatostatin, pancreatic polypeptide, and gastrin.

Synonym(s): islet tissue, Langerhans islands, pancreatic islands, pancreatic islets

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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