Glia Connection (IMAGE) Duke University Caption An image taken from 3-D electron microscopy reveals the structure of a neuropod -- a cell in the gut that senses nutrient levels and sends signals that govern appetite, but isn't a neuron. Credit Diego Bohorquez, Duke 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.