Regulatory T cell (IMAGE) Helmholtz Centre for Infection Research Caption This image shows a regulatory T cell (blue) in electronmicroscopic magnification, interacting with bacteria cells (green). Credit © HZI / Rohde Usage Restrictions None 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.