Tracking Blood Cancer (IMAGE) Rockefeller University Press Caption Eight months after transplantation of a single mutated cell, the bone marrow (left) and spleen (right) of a previously healthy mouse display a full-blown type of blood cancer characterized by overproduction of blood clot–forming cells. Credit Lundberg et al., 2014 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.