Tracing Down-And-Back Neurons in the Ventral Nerve Cord (image) The Zuckerman Institute at Columbia University Share Print E-Mail Caption These are down-and-back neurons (green) and nociceptive sensory neurons (red) in the ventral nerve cord of a fruit fly. Nerve bundles (blue) serve as an anatomical landmark. Credit Anita Burgos/Grueber Lab/Columbia's Zuckerman Institute Usage Restrictions Please contact Zuckerman Institute for reprint permissions. Share Print E-Mail 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.