T Cells Interacting with a Dendritic Cell (IMAGE) Helmholtz Centre for Infection Research Caption T cells are immune cells important for the defense against viruses. The ongoing exposure to cytomegalovirus impairs their function. In the picture: two T cells (red) interact with a dendritic cell, another type of immune cell. 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.