Nils Landegren, Karolinska Institutet (IMAGE) Karolinska Institutet Caption Nils Landegren, M.D., is a doctoral student at Karolinska Institutet. Credit Frida Dalin Usage Restrictions This image may only be reproduced/published in connection to media reports about Nils Landegren's research at Karolinska Institutet, Sweden. 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.