Dr. Wandi Zhu (IMAGE) Georgia State University Caption Dr. Wandi Zhu, first author of the study and a research assistant professor in the Institute for Biomedical Sciences at Georgia State University Credit Georgia State University 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.