Cartilage (IMAGE) Duke University Caption A cross-section of the engineered tissue shows cartilage (red) filling in between and around the bundles of polymer fibers (white). Credit Charles Gersbach and Farshid Guilak, Duke University 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.