Heart Development and Disease (IMAGE) Cold Spring Harbor Laboratory Press Caption Models of mouse hearts at stage E12.5 eroded to approximate midvalve level for the pulmonary (left) and aortic (right) valves. See Figure 2 in chapter by Mohun and Anderson for additional details. Credit Illustration kindly provided by Timothy J. Mohun. Usage Restrictions None 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.