Skip to main content
. Author manuscript; available in PMC: 2011 Jun 10.
Published in final edited form as: J Phys Chem B. 2010 Jun 10;114(22):7672–7680. doi: 10.1021/jp101717u

Figure 1.

Figure 1

HPLC chromatograms of DNA films, hydrated to Γ = 2.5 H2O/nucleotide, X-irradiated at RT and then dissolved in nuclease free water. Unaltered free bases were detected by absorbance, A, at 254 nm after passing through a reverse-phase column. Uracil, U, was used as an internal standard for the purpose of quantification.15 In Cper, there is a fast-running contaminant, X, that increased the retention time for the released bases.