PECAM1-positive Tumor (IMAGE) University of North Carolina Health Care Caption This is an intensity-colored image of blood flow in a PECAM1-positive tumor. Credit Andrew Dudley, PhD, and Paul Dayton, PhD, UNC School of Medicine 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.