'Crowd Surfing' Microtubule (IMAGE) Delft University of Technology Caption A 'crowd surfing' microtubule is propelled by kinesin-motors. Credit Image TU Delft Usage Restrictions Embargoed: not for release until 2:00 pm U.S. Eastern Time Thirsday, 11 May 2006 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.