mTurquoise2 Crystal (IMAGE) European Synchrotron Radiation Facility Caption This is a photo taken with a microscope of one of the tiny crystals of mTurquoise2 molecules used in this study to understand the interactions, at the atomic scale, that result in the high fluorescence efficiency of mTurquoise2. The scale bars represent 0.1 mm. Credit von Stetten/Royant/ESRF/CNRS 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.