Becoming a Tumor (IMAGE) Rockefeller University Caption To examine how the production of protein can shift as cells become malignant, the researchers first primed mouse skin to express a molecule (green) common in tumors. Credit Laboratory of Mammalian Cell Biology at The Rockefeller University/Nature Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. 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.