Mouse Hematopoietic Progenitor Cell Expressing BCL-XL (image) Rockefeller University Press Share Print E-Mail Caption When transiently expressed in HSCs, BCL-XL temporarily protects the cells from apoptosis and enhances their ability to be transplanted from one mouse to another. This microscopy image shows the successful introduction of BCL-XL (green) into a cell labeled for its nucleus (blue) and mitochondria (red). Credit Kollek et al., 2017 Usage Restrictions Reporters may freely use these materials in news coverage with the appropriate credit information. Share Print E-Mail 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.