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©2014 Baishideng Publishing Group Inc.
World J Clin Oncol. Aug 10, 2014; 5(3): 348-358
Published online Aug 10, 2014. doi: 10.5306/wjco.v5.i3.348
Figure 1
Figure 1 Interaction between psoralen and DNA. Upon absorption of ultraviolet radiation A (UVA) photons, the psoralen excited state can react with a thymine and covalently attach the DNA. The initial photoadduct can absorb a second UVA photon and react with a second thymine on the opposing strand of DNA helix to crosslink the two strands.


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