pancreatic tissue of a mouse (IMAGE) Cold Spring Harbor Laboratory Caption Senescent cells (blue) accumulate as we age. CAR T cells can be programmed to seek them out and destroy them. The image above shows healthy pancreatic tissue samples from an old mouse treated with CAR T cells as a young pup. Credit Amor Vegas lab/Cold Spring Harbor Laboratory Usage Restrictions Attribution required 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.