Qian Sarcomeres (IMAGE) University of North Carolina Health Care Caption One laboratory method to create healthy heart muscle leads to better organized sarcomeres -- the cells that make heart muscle striated -- stained green here. Credit Lab of Li Qian, UNC School of Medicine Usage Restrictions credit properly 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.