Clotilde Wiel and Martin Bergo (IMAGE) Karolinska Institutet Caption Clotilde Wiel, postdoc, and Martin Bergo, professor, at the Department of Biosciences and Nutrition, Karolinska Institutet, Sweden. Photo: Ulf Sirborn Credit Ulf Sirborn 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.