Comparison of Stem Cell-Modeled Embryo and Embryo Cultured (image) University of Cambridge Share Print E-Mail Caption This image shows stem cell-modeled mouse embryo at 96 hours (left); Mouse embryo cultured in vitro for 48 hours from the blastocyst stage (right). The red part is embryonic and the blue extra-embryonic. Credit Sarah Harrison and Gaelle Recher, Zernicka-Goetz Lab, University of Cambridge Usage Restrictions May be used in relation to this story only. Share Print E-Mail 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.