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Figure 1: Comet assay and Comet assay/araC in TK6 cells. Slides for Comet assay were prepared immediately after the exposure to chemical mutagens for 2 h with or without araC/HU, or 2 h culture with or without araC/HU after UVC irradiation. Electrophoresis was conducted at p H > 1 3 . Reproducibility was ascertained by three independent experiments, and representative data are shown. The error bars indicate standard errors of the mean. S ignificant difference from untreated control: 𝑃 < . 0 5 .