Peixuan Guo (IMAGE) Purdue University Caption Peixuan Guo, professor of molecular virology and director of the Purdue Nanomedicine Development Center, observes biological processes at the nanoscale. The National Institutes of Health recently selected Guo's team as one of eight national nanomedicine development centers. Credit Purdue News Service photo/David Umberger 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.