View of the Linking Site of Serotonin (VIDEO) European Synchrotron Radiation Facility This video is under embargo. Please login to access this video. Caption View of the linking site of serotonin (in green), located between the pink and the violet subunits. The microscopy experimental data are represented by a translucent surface. View of the linking site of serotonin (in green), located between the pink and the violet subunits. The microscopy experimental data are represented by a translucent surface. Credit Hugues Nury/IBS Usage Restrictions Credits have to be mentionned 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.