Embryos (IMAGE) University of Cologne Caption Pictures shows a wild type embryo on the left and an embryo expressing inactive Caspase-8 causing cardiovascular destruction (right) Credit University of Cologne, CECAD 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.