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. 2019 Apr 19;5(4):eaav3179. doi: 10.1126/sciadv.aav3179

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Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 2 — (A) Schematic representation of the selective binding of testosterone (2a) by receptor 1 from a mixture of 2a, progesterone (3a), and β-estradiol (4a) (1:1:1 or 1:100:100 ratio) in water. ¹H NMR spectra (500 MHz, D₂O) of (B) receptor 1 and (C) products obtained from an equimolar mixture of 2a, 3a, and 4a in the presence of 1 at 60°C for 10 min (gray square, 1•3a) and (D) 1•2a. (E) Changes of the ¹H NMR chemical shifts (Δδ in ppm) of 2a upon encapsulation by 1. (F) ESI-TOF MS spectrum (H₂O, room temperature) of 1•2a.