Opoid Receptor (image) Scripps Research Institute Caption Researchers have unraveled the mystery of how the element sodium influences the signaling of opioid receptors, opening the door to new kinds of therapies. Credit Photo courtesy of the Scripps Research Institute. Usage Restrictions None 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.