Zhao image 1 (of 2) (IMAGE) Florida State University Caption Human mesenchymal (adult) stem cells are grown on two-dimensional films made with the biomimetic materials chitosan and gelatin. Credit Courtesy of Feng Zhao, FAMU-FSU College of Engineering, Tallahassee, Fla. Usage Restrictions For Educational and News Purposes Only 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.