Magnus Evander, Umea University (IMAGE) Umea University Caption Magnus Evander, Department of Clinical Microbiology, Umeå University. Credit Mattias Pettersson Usage Restrictions Photo: Mattias Pettersson/Umeå University 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.