Hongji Yan in the lab (IMAGE) KTH, Royal Institute of Technology Caption In tests on lab rats with cranial injuries, Hongji Yan and his colleagues found that this biomaterial can help solve two key requirements for successful healing bone defects. Credit (Photo: Vaibhav Srivastava) Usage Restrictions Credit must be given to the creator. License CC BY 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.