Steps in wound healing in model system (IMAGE) American Institute of Physics Caption Biomedical engineers have developed a technique to observe wound healing in real time, discovering a central role for cells known as fibroblasts. The work is the first demonstration of a wound closure model within human vascularized tissue in a petri dish. This image shows steps in wound healing in a model system. Credit Jeroen Eyckmans, Juliann B. Tefft Usage Restrictions Journalists may use this image only with appropriate credit. 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.