Photo of Researchers (IMAGE) Karolinska Institutet Caption From left: Anton Larsson, PhD student and co-author, and Björn Reinius, principal investigator at the Department of Medical Biochemistry and Biophysics at Karolinska Institutet in Sweden. 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.