Cardiomyocytes (IMAGE) Cell Press Caption High magnification confocal image of cardiomyocytes in the myocardial tissue of an organoid. Notice the banded structure of sarcomeres (the contracting units of the heart). (red: cardiomyocytes, blue: cell nuclei). Credit Aleksandra Kostina, PhD Usage Restrictions Credit must be given to the creator. Adaptations must be shared under the same terms. License CC BY-SA 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.