Gerard Roelfes, University of Groningen (IMAGE) University of Groningen Caption University of Groningen Professor of Biomolecular Chemistry Gerard Roelfes. Credit Gerard Roelfes / University of Groningen Usage Restrictions With credit 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.