
Experimental apparatus and VUV beam guiding The design of the spectroscopy apparatus is shown in Extended Data Fig. 1. It consists of the chamber with the SBO crystal for SHG frequency conversion, a vacuum beamline, a VUV spectrometer and a spectroscopy chamber with a thorium-doped crystal and the detection system. The generated VUV beam is aligned
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Gillis, A. et al. Critical assessment of G protein-biased agonism at the μ-opioid receptor. Trends Pharmacol. Sci. 41, 947–959 (2020). Article PubMed CAS Google Scholar Varga, B. R., Streicher, J. M. & Majumdar, S. Strategies towards safer opioid analgesics—a review of old and upcoming targets. Br. J. Pharmacol. 180, 975–993 (2023). Article PubMed CAS Google
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