Actin Comet Tails (VIDEO) University of Pennsylvania School of Medicine This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption These are actin 'comet tails' formed by WHAMM (green), Arp2/3 complex, and actin (red) in live cells. Credit Dominguez lab, Perelman School of Medicine, University of Pennsylvania; Current Biology Usage Restrictions None 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.