Press photo, researchers (IMAGE) Karolinska Institutet Caption Tim Willinger, Associate Professor at the Department of Medicine, Huddinge, Karolinska Institutet, and first author Elza Evren, a doctoral student in Tim Willinger’s research team. Credit Tiphaine Parrot Usage Restrictions None 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.