Beta Cells Secreting Insulin (image) Washington University School of Medicine Share Print E-Mail Caption Researchers at Washington University School of Medicine in St. Louis have tweaked the recipe for coaxing human stem cells into insulin-secreting beta cells and shown that the resulting cells are more responsive to fluctuating glucose levels in the blood. Here, the new beta cells appear red as they secrete insulin in response to glucose. Credit Millman lab, Washington University Usage Restrictions None Share Print E-Mail 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.