2D gastruloid (IMAGE) Rockefeller University Caption Researchers can examine the early effects of mutations using lab-generated human embryos that mimic the first stages of development. Credit Laboratory of Stem Cell Biology and Molecular Embryology at The Rockefeller University Usage Restrictions Image may be used to illustrate research described in the accompanying release. 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.