Drs. Ryan Hibb (IMAGE) UT Southwestern Medical Center Caption Drs. Ryan Hibbs and Jeong Joo Kim prepare samples for their cryo-electron microscopy experiments. Credit UT Southwestern Medical Center 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.