Niklas Björkström, Karolinska Institutet (IMAGE) Karolinska Institutet Caption This is Niklas Björkström, researcher at the Department of Medicine at Karolinska Institutet in Huddinge, Sweden. Credit Markus Marcetic Usage Restrictions The photo may only be used in connection to reports about Dr Björkström's research. 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.