Christian Riedel, Karolinska Institutet (IMAGE) Karolinska Institutet Caption Christian Riedel, researcher at the Department of Biosciences and Nutrition, Karolinska Institutet, Sweden. Credit Daniela Später Usage Restrictions The photo may only be used in connection to reports about Dr Riedel's research. 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.