Susanne Keipert (IMAGE) Stockholm University Caption Susanne Keipert, first author, Group leader at the Department of Molecular Biosciences, The Wenner-Gren Institute Credit Sören Andersson/Stockholm University Usage Restrictions May be used in connection to the related content. 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.