Growing Together (video) Rockefeller University Share Print E-Mail Loading video... Caption New microtubules (red) grow from a common center, with their positive ends (yellow) extending outward in random directions. As shown in this animation, the microtubules cluster together and form bundles as they grow. Credit Laboratory of Neurotechnology and Biophysics at The Rockefeller University/Cell Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. Share Print E-Mail 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.