A Langerhans Islet (IMAGE) Université de Genève Caption A Langerhans Islet with insulin-producing cells (in green), and glucagon-producing cells (in red). Cell nuclei in blue. Credit © UNIGE , Dibner Lab Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.