Two-Cells-In-One Leukemia Treatment (IMAGE) UCLA Samueli School of Engineering Caption This is a scanning electron microscope colorized to show the hematopoietic stem cells (purple) and blood platelets (green) joined together. Credit Zhen Gu Research Lab/UCLA Samueli 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.