Satellite DNA (VIDEO) Rockefeller University Press This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Satellite DNA (green and red) is compact in a normal proliferative cell (left) but distended in a nonproliferative senescent cell (right). A study in The Journal of Cell Biology identifies a common, early marker of senescence that may have important implications for aging and cancer. Credit Swanson et al., 2013 Usage Restrictions Reporters may freely use these materials in news coverage, with the appropriate credit information. 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.