Cardiac Development out of Control (IMAGE) Max-Planck-Gesellschaft Caption Cardiac development out of control: Absence of the transcription factor Ajuba during cardiac development, as is the case in the right-hand photo due to genetic intervention, disrupts development of the heart in the fish embryo. In addition to an increased number of cardiac muscle cells (green with red-stained nuclei), the heart is additionally deformed during development. Credit Max Planck Institute for Heart and Lung Research 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.