Press photo (IMAGE) Karolinska Institutet Caption Associate Professor Tim Willinger and Doctoral Student Elza Evren, Department of Medicine Huddinge at Karolinska Institutet. Credit Tiphaine Parrot Usage Restrictions None 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.