What is ilets of langerhans? Md. Saifur Rahman The pancreatic islets or islets of Langerhans are the regions of the pancreas that contain it's endocrine (hormone-producing) cells.You may likeDo I need car insurance?What is car insurance?How could I get cheaper car insurance?What is auto insurance?Why Adulterant food is the barrier to sound health?What are the producers?What are food preservatives?What is food chain?What is tertiary consumer?