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Structure of 2′F-ANA nucleosides (A); Structure of the thrombin binding aptamer with an edge-loop G-quadruplex conformation and the anti- and syn-oriented deoxyguanosine (B). Reprinted (adapted) with permission from Chemistry Central Journal, 2014, 8, 19—Published by Springer Nature. Creative Commons. License link available online: https://creativecommons.org/licenses/by/2.0. (accessed on 6 June 2020)
