Cover: The unusual shape of a mouse pancreatic islet immunostained for insulin (green), the neural cell adhesion molecule NCAM (red), and DAPI. If you could ask a question to pancreatic islets, what would that be? Surprising as it can be, it appears as if this time it was the islet of Langerhans itself asking a question, “Do you really think you know enough about me?!” Image courtesy of Vincenzo Cirulli, Joseph Nadler, and Antonio J. Jimenez-Caliani, Diabetes and Obesity Center of Excellence, Department of Medicine, Institute for Stem Cell and Regenerative Medicine, University of Washington, Seattle, Washington.

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. Click here for more information.