Peixuan Guo, University of Kentucky (IMAGE) University of Kentucky Caption The University of Kentucky's Peixuan Guo is considered one of the top three nanobiotechnology experts in the world. Credit UK HealthCare 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.