Time-Lapse Image Sequences (IMAGE) University of Pittsburgh Caption Time-lapse image sequences of embryonic tissue spreading over six hours. The red line represents the lab's simulation, and the dotted line represents the experimental results. Credit MechMorpho Lab/University of Pittsburgh 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.