Ren Xu, University of Kentucky 1 (IMAGE) University of Kentucky Caption A new study conducted by the lab of Markey researcher Ren Xu suggests that targeting a protein known as collagen XIII could be key for suppressing breast cancer metastasis. Credit UK Research Communications 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.