Cryo-EM (IMAGE) DOE/SLAC National Accelerator Laboratory Caption Research associate Megan Mayer and graduate student Patrick Mitchell load a sample into one of SLAC's new cryogenic electron microscopes. Credit Andy Freeberg/SLAC National Accelerator Laboratory 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.