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. Author manuscript; available in PMC: 2016 Jul 18.
Published in final edited form as: Cancer Biomark. 2006;2(1-2):51–60. doi: 10.3233/cbm-2006-21-206

Fig. 3.

Fig. 3

5-Fluorodeoxyuracil pairing with adenine in DNA. The fluorine molecule is at the 5 position (arrow), and does not interfere with hydrogen binding with adenine, but is recognized by DNA mismatch repair proteins.