Colorectal Samples Showing PAT4 (IMAGE) University of Oxford Caption Higher levels of PAT4 in colorectal cancer tumors (brown staining in B) are linked to worse patient outcome. Credit Oxford University Usage Restrictions News use only 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.