Tumor Induction from a Distance (IMAGE) University of Freiburg Caption According to a study by researchers at the University of Freiburg, stem cells resulting in metastasizing tumors may also be induced from neighboring tissues, and do not necessarily require initial DNA damage in the affected cells themselves. Credit Graphics: Ralf Baumeister 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.