Prototissue Spheroid Undergoing Reversible Contractions (VIDEO) University of Bristol 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 Prototissue spheroid undergoing reversible contractions Credit Dr Pierangelo Gobbo, University of Bristol Usage Restrictions Single use only - please do not archive. 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.