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(A) CD spectra of VEGF promoter C-rich oligomers (Py24) in the absence and presence of 3c at the indicated pH. (B) Fluorescence resonance energy transfer (FRET) titration experiments of dual labeled VEGF promoter C-rich oligomer (FPy24T) with 3c at pH 6.0. (C) 1H NMR spectra of the imino proton region of Py24 upon titration of 3c at pH 6.0.
