Ectoderm 2 (IMAGE) Rice University Caption Rice University graduate student George Britton checks a set of cell colonies. He and Rice bioscientist Aryeh Warmflash have created lab tools and procedures that allow them to view in fine detail the signaling pathways and processes by which early embryos form germ layers. Credit Jeff Fitlow/Rice University 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.