Heat Map of Heart Valve Culture (image) Vanderbilt University Caption This is a heat map of the valve-formation section of a chick heart sitting on a special hydrogel which is deformed by the beating of the attached heart muscle. Regions of high deformation are colored orange and red while areas of low deformation are colored blue. Credit MK Sewell-Loftin / Vanderbilt Usage Restrictions None 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.