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Flow cytometry of Annexin/PI staining in control and experimental groups. Lower left quadrant: live cells; lower right quadrant: early apoptosis; upper right quadrant: late apoptosis; upper left quadrant: necrotic cells. All assays were performed in triplicate, and the mean ± standard deviations are shown. * p < 0.05, ** p < 0.001, † p < 0.01, †† p < 0.001; * and † symbols respectively indicate the comparison to control and QT groups.
