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Evaluation of DNA damage by the Comet assay. (A) Control group, (B) H2O2 positive control group, (C) 2 W/kg exposure group, (D) 2 W/kg sham‐exposure group, (E) 4 W/kg exposure group, (F) 4 W/kg sham‐exposure group (shown at ×200 magnification). The H2O2 positive control group assumed a Comet‐like appearance, while cells in the other groups were intact with no evidence of DNA damage following exposure to radiofrequency radiation. H2O = hydrogen peroxide; RFR = radiofrequency radiation.
