Uninjured and Injured Epicardium (IMAGE) University of North Carolina Health Care Caption This is a comparison of uninjured and injured tissue in the outer layer of the heart showing the expansion and generation of cells that form scarring. Credit Arjun Deb, M.D. 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.