Sara Wilson, Umeå University (IMAGE) Umea University Caption Sara Wilson is in the Department of Molecular Biology, Umeå University. Credit Umeå University Usage Restrictions This photo may only be used in texts based on this press release. 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.