DDR2 (IMAGE) Michigan Medicine - University of Michigan Caption This immunofluorescence image shows breast cancer cells (green) aligned with mesenchymal stem cells (red) expressing DDR2 protein (white). Credit Michigan Medicine Usage Restrictions for use in stories about this research 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.