Issues

On the cover: Islets of Langerhans cells, computer artwork. These cells (large, pink) of the pancreas release hormones (dots) into the blood. About 70% of these are β-cells and 15–20% are α-cells. Both regulate blood glucose levels. β-cells produce insulin hormone to store glucose as glycogen in the liver and muscles. α-cells secrete glucagon, which converts glycogen back into glucose when needed for energy. They work as a paracrine feedback system, where insulin inhibits α-cells and glucagon inhibits β-cells. Credit: David Mack/Science Source. For more information, please visit sciencesource.com.

Authors are invited to submit images for use on the cover of Diabetes. Black and white or color photographic or photomicrographic images are acceptable. Cover image submission and selection is completely independent of article submission and the peer-review process.