Sorting Microtubules in Nanochannels (IMAGE) Delft University of Technology Caption Artist impression of the sorting of green and red microtubules in nanochannels. Kinesin motors on the walls push the microtubule forward while an external experimentalist can steer the direction by exerting an electrical force on the tube. Credit Image TU Delft/Tremani Usage Restrictions Embargoed: not for release until 2:00 pm U.S. Eastern Time Thursday, 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.