Research team (IMAGE) The University of Hong Kong Caption The HKU Dental Materials Science research team: (from left) co-investigator postdoctoral fellow Dr Hao Ding, principal investigator Dr James Kit Hon Tsoi, and PhD candidate Ms Yanning Chen. Credit The University of Hong Kong Usage Restrictions N/A License Original 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.