Rights: Diagram: © Copyright. 2011. University of Waikato. All Rights Reserved. Inset micrograph: Copyright Professor David Fankhauser. Published 2 November 2011 Size: 140 KB

The pancreas is located in the abdomen behind the stomach. Within the pancreas are clusters of cells called islets of Langerhans (or islets). Cells within the islets produce the hormone insulin.