Pancreatic Islet (IMAGE) St. Jude Children's Research Hospital Caption New research from the laboratory of Dario Vignali, Ph.D., at St. Jude Children's Research Hospital found that T cell accumulation in the pancreatic islet of Langerhans is tightly controlled. The results provide insight into the composition of T cells that mediate type 1 diabetes. In this image of a pancreatic islet, beta cells are stained green. Credit Image provided by Maria Bettini, Ph.D., from the laboratory of Dario Vignali, Ph.D., at St. Jude Children's Research Hospital Usage Restrictions Image may only be used with appropriate caption or credit. 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.