Ashton, Blennow and Hansson (IMAGE) University of Gothenburg Caption Nicholas Ashton, Kaj Blennow and Oskar Hansson. Credit Photo: University of Gothenburg, Lund University. Usage Restrictions For editorial use, no commercial use. 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.