Diabetes Discovery (IMAGE) University of Exeter Caption These are insulin-secreting cells (blue) in a patient with type 1 diabetes coming under attack from immune cells (red and green). Credit Pia Leete. Usage Restrictions Use with accreditation. 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.