Technological Impact (IMAGE) Helmholtz-Zentrum Hereon Caption The stem cells grown on the polymer that changes shape at a programmed temperature could perhaps one day be used to support the healing of severely fractured bones. Credit HZG/Xun Xu 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.