Zhi-Ren Liu (IMAGE) Georgia State University Caption Zhi-Ren Liu is lead author of the study and professor in the Department of Biology at Georgia State University. Credit Georgia State University 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.