Juniorprof. Dr. Yongguo Li (IMAGE) University of Bonn Caption vom Institut für Pharmakologie und Toxikologie des Universitätsklinikums Bonn. Credit Foto: Rolf Müller/UKB Usage Restrictions This image may be used together with the press release. 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.