Drosophila larval neuromuscular circuit (IMAGE) University of Chicago Medical Center Caption Muscles are labeled with phalloidin (blue). Motor neuron axon terminals that innervate muscles are labeled with a transgenic reporter (green). Credit Robert Carrillo, PhD, and Yupu Wang Usage Restrictions May only be used for reporting on this story 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.