Jürgen Schleucher (IMAGE) Umea University Caption Jürgen Schleucher, Department of Medical Chemistry and Biophysics, Umeå University Credit Mattias Pettersson Usage Restrictions Media use 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.