Collagen Strands (IMAGE) University of Utah Caption On the left, fluorescent photographs of collagen strands show increasing levels of damage revealed in tendons that are progressively stretched (from top to bottom: 7.5%, 10.5%, 13.5% elongation). The fluorescent signals match the computer simulation on the right of the damage to the collagen molecule under tension. Credit Jeff Weiss, Michael Yu Usage Restrictions Credit Jeff Weiss, Michael Yu. 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.