Elisabeth Sauer-Eriksson (IMAGE) Umea University Caption Elisabeth Sauer-Eriksson, Professor, Department of Chemistry, Umeå University Credit Mattias Pettersson, Umeå University Usage Restrictions Free to publish 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.