Dennis Sandris Nielsen (IMAGE) University of Copenhagen - Faculty of Science Caption Professor Dennis Sandris Nielsen, University of Copenhagen Credit Emilie Thejll-Madsen / University of Copenhagen Usage Restrictions Image may be used with appropriate caption and credit. 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.