Failing heart cells (IMAGE) University of Utah Health Caption Fluorescent microscope image of the structure of failing heart cells. Green is a label that indicates the location of cell membranes. Credit Hong Lab Usage Restrictions Credit image creator License Original 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.