Melanoma (IMAGE) University of Zurich Caption The stem-cell factor Sox10 (red) is active in the tumor tissue of melanoma patients and essential for the development and spread of cancer. Credit Olga Shakhova 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.