Tobias Claff und Prof. Dr. Christa Müller (IMAGE) University of Bonn Caption von der Universität Bonn betrachten einen Glasträger, auf dem sich die Opioid-Rezeptor-Kristalle bilden. Credit © Foto: Volker Lannert/Uni Bonn Usage Restrictions This photo may be used together with the press release. 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.