islets of Langerhans[lahng′ĕr-hahnz]


1. 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.

islet tissue , Langerhans islands , pancreatic islands , pancreatic islets

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