Muscle On-a-Chip Models Cardiac Stem Cell Therapy (VIDEO) Rockefeller University Press This video is under embargo. Please login to access this video. Caption A two-cell "microtissue" contains a mouse embryonic stem cell-derived cardiomyocyte and a mouse neonatal cardiomyocyte. The lower panel shows the traction forces generated as the two cells contract; the stronger, neonatal cardiomyocyte produces more force than the weaker, stem cell-derived cardiomyocyte. Credit Aratyn-Schause, Y. et al. <em>J Cell Biol.<em> 2016 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.