DNA Damage (IMAGE) National University of Singapore Caption Persistent DNA damage, visualized by gammaH2AX staining (red dots), in hematopoietic stem cells could lead to leukemia. Credit National University of Singapore 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.