Doug Melton, Harvard University (IMAGE) Harvard University Caption Doug Melton, who when his then infant son was diagnosed 23 years ago with type 1 diabetes dedicated his career to finding a cure for the disease, has successfully produced insulin producing, glucose sensitive, human beta cells from human embryonic stem cells. Credit B. D. Colen/Harvard University Usage Restrictions This image may only be used with stories about Doug Melton and his scientific work. 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.