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Plots of re-referenced 1H NMR chemical shifts (δ) reported for the central adenosine residues within canonical triplets (as defined in text and Fig. 1 caption) versus mean shifts calculated for canonical triplets (〈δ〉can). a Data are shown for all adenosine protons grouped by atom type (symbols defined in a inset). b–d Expansions showing data grouped according to triplet sequence for the adenosine H2 (b), H8 (c) and ribose (d) protons (symbols defined in b inset)
