Stefan Nilsson (IMAGE) University of Gothenburg Caption Stefan Nilsson, University of Gothenburg, Sahlgrenska Academy Credit Photo by Cecilia Hedström Usage Restrictions For editorial use, not commercial, when publishing news and other stories linked to the University of Gothenburg. 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.