Hong Xu (IMAGE) Karolinska Institutet Caption Hong Xu, postdoctoral researcher at the Department of Neurobiology, Care Sciences and Society, Karolinska Institutet. Credit Ulf Sirborn Usage Restrictions None 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.