Caught on camera (IMAGE) Duke University Caption A tiny worm cell hundreds of times smaller than a grain of sand is caught in the act of breaking through the tough outer membrane that normally holds cells in place. Credit Courtesy of the Sherwood lab, Duke University Usage Restrictions None 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.