Exhausting T Cells (IMAGE) University of Pennsylvania School of Medicine Caption Exhausted T cells have poor function in chronic infections and cancer but can be therapeutically re-invigorated. Credit John Wherry, Perelman School of Medicine at the University of Pennsylvania; <i>Immunity</i> 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.