Heart on a Chip (IMAGE) University of California - Berkeley Caption UC Berkeley researchers have created a 'heart-on-a-chip' that effectively uses human cardiac muscle cells derived from adult stem cells to model how a human heart reacts to cardiovascular medications. The system could one day replace animal models to screen for the safety and efficacy of new drugs. Credit Photo by Anurag Mathur/Healy Lab Usage Restrictions All rights reserved 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.