The Cardiac Tubular Network (IMAGE) American Institute of Physics Caption This is confocal image of a control rat cardiomyocyte with edge-enhancement. It shows the very complex network of membrane invaginations in cardiac cells, that allows synchronous contraction. Following infarction, cardiac cells undergo a disruption of this system, thus compromising cardiac function. Credit C.Crocini/U.Florence Usage Restrictions This image may be used only with appropriate caption and credit. 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.