A new look at regulatory T cells (IMAGE) La Jolla Institute for Immunology Caption The researchers used fluorescent tags to capture this image of a Treg (green) and an exTregs (pink) in a mouse artery wall. Credit Image from La Jolla Institute for Immunology Usage Restrictions Credit: La Jolla Institute for Immunology License Original 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.