ATF2 Localization (image) Sanford-Burnham Medical Research Institute Caption Human squamous carcinoma cells exhibit ATF2 (green) located at mitochondria (red) after exposure to genotoxic stress, whereas ATF2 remains in the nucleus in human melanoma cell exposed to the same genotoxic stress. Nuclei are shown in blue. Credit Ronai lab, Sanford-Burnham Medical Research Institute Usage Restrictions Please email email@example.com for permission to use this image. 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.