SCRIPPS RESEARCH INSTITUTE IMAGE: A CRYSTAL STRUCTURE OF THE OPTIMIZED ANTIBODY, C10-S66K. THE BINDING POCKET OF C10‐S66K WITH FENTANYL AND CARFENTANIL IS DISPLAYED AS A GREY SURFACE WITH FENTANYL AND CARFENTANIL SHOWN AS GREEN AND YELLOW STICKS, RESPECTIVELY. CREDIT: SCRIPPS RESEARCH LA JOLLA, CA—An antibody in single-chain fragment variable (scFv) format that binds to the powerful opioid carfentanil...