Johan Ankarklev (IMAGE) Stockholm University Caption Johan Ankarklev, Associate Professor at the department of Molecular Biosciences, the Wenner Gren Institute, and senior author of the study. Credit Sören Andersson/Stockholm University Usage Restrictions May be used in connection to the related research. 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.