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Thermal denaturation studies monitored by UV absorbance at 260 nm showing heating (▲) and cooling (Δ) transitions. (A) The unmodified duplex 5′-d(CTATGATTCA)-3′·5′-d(TGAATCATAG)-3′. (B) The duplex containing the AFB-β-FAPY adduct. (C) The duplex containing the AFB-α-FAPY adduct. The solid lines are first derivative curves.
