Fluorescence stained cells (IMAGE) Salk Institute Caption Using fluorescent stains, researchers are able to visualize cells of different species origins in an early stage embryo. Credit Weizhi Ji, Kunming University of Science and Technology Usage Restrictions With credit and related coverage. 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.