Visible Aging in Mice (IMAGE) University of North Carolina Health Care Caption The progression of P16 increases in mice as they age, visible from the younger mice (left) to the older mice (right). Credit University of North Carolina 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.