Visit the News Hub News ReleaseLight — not pain-killing drugs — used to activate brain’s opioid receptorsApril 30, 2015 https://biomedradio-media.wustl.edu/embargo/opto-MOR%20.mp3 View Article Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Click to share on LinkedIn (Opens in new window) LinkedIn Related