Human eye cells in a mouse embryo (IMAGE) University at Buffalo Caption The human cells (labelled green) are eye cells in a mouse embryo (labelled blue) at 17 days. The development of human pluripotent stem cells injected in a mouse embryo accelerates to match the much faster developmental pace of the mouse host embryo. Normally, eye cells in a human embryo are generated at a much later stage. Credit Zhixing Hu 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.