Cas9 (IMAGE) Florida State University Caption An image of ice-embedded CRISPR-Cas9 enzyme interacting with magnesium ions captured by the cryo-electron microscope at FSU’s Biological Science Imaging Resource. The image is on the scale of nanometers, which are one-billionth of a meter. Credit Courtesy of Hong Li/FSU College of Arts and Sciences Usage Restrictions This image may be used with appropriate caption and credit. License Original 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.