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Markers of DNA damage after UVR exposure. DNA was extracted from the skin of mice subjected to the 5‐week treatment cycle of UVR, with or without immediately following topical treatments (Schedule A), and DNA content of 6‐4 PP and CPD was determined. Shown are averages from each group of three mice. *p < 0.05; ***p < 0.001; n.s., no statistical difference (p > 0.05).
