(IMAGE) University of Cologne Caption A human cardiac organoid (Cardioid), one of the models the researchers used to reconstruct human cardiac development in 3D. Cardiac mesoderm stage human Cardioid visualizing Phalloidin (grey) and β-catenin (Magenta). Credit Dr Deniz Bartsch Usage Restrictions none 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.