cell models (IMAGE) Rice University Caption In these images of a stem cell model of neural tube closure, the progression of the cell colony from day 5 to day 7 is represented on two axes, where “XY: bottom section” shows the distribution of differentiating cells at the base of the colony and “XZ” shows a side view of the cell colony, with neural tube cells (light blue) closing to form a tube that is covered by a continuous layer of future skin cells (magenta). Credit (Image courtesy of the Warmflash lab/Rice University) Usage Restrictions Must credit the Warmflash lab/Rice University. 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.