Neuronal Cell Body (IMAGE) NIH/National Institute on Drug Abuse Caption Fluorescence micrograph of a neuronal cell body showing the location of opioid receptor activation detected by the new biosensor immediately before (left panel) and 20 seconds after (right panel) application of morphine. Arrow points to the Golgi apparatus, a location within the interior of the cell body at which receptors are activated by morphine (as well as a number of other non-peptide opioid drugs) but not by peptide ligands. Credit Courtesy: Drs. Miriam Stoeber and Damien Jullié. 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.