GPCR (2 of 3) (image) DOE/SLAC National Accelerator Laboratory Caption A team led by Vadim Cherezov of The Scripps Research Institute views an X-ray diffraction pattern, produced when SLAC's Linac Coherent Light Source X-ray laser struck a crystallized sample of the human serotonin receptor. The team collected and analyzed more than 100,000 of these patterns to reproduce a 3-D structure of the receptor. Credit Fabricio Sousa/SLAC Usage Restrictions None 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.