E2-Crimson Expressing Tumor Cells (IMAGE) BIOSS - Centre for Biological Signalling Studies Caption This image shows an E2-Crimson expressing tumor cells (gray/white structures) in the organs of a rat after six weeks of tumor development. Credit Picture by: Working Group Shastri Usage Restrictions This image may only be used with the appropriate caption and credit. 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.