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Analysis of in-cell levels of γ-H2AX following 0, 6, 12, 24, and 48 hours of treatment. Enhanced H2AX phosphorylation was observed in HeLa cells after 24 and 48 hours of exposure to 100 µg/mL of Achillea wilhelmsii C. Koch hydroalcoholic extract. **P<0.05 compared to untreated control.
