Erik Björn (IMAGE) Umea University Caption Professor Erik Björn at the Chemistry Department, Umeå University, led the study on the role of thiols on mercury uptake. Credit Photo: Mattias Pettersson Usage Restrictions No 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.