Researchers (IMAGE) Medical College of Georgia at Augusta University Caption Drs. Zheng Dong and Zhengwei Ma, MCG research associate and the study's first author. Credit Kim Ratliff, Augusta University photographer 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.