Planarian Stem Cell Population (IMAGE) Stowers Institute for Medical Research Caption This is a picture of an abundant stem cell population (green) helps maintain the ciliated epithelium (red) and other tissues of an adult planarian flatworm. Credit Image courtesy of Elizabeth Duncan, PhD, Sánchez Alvarado Lab, Stowers Institute for Medical Research 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.