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Cell viability and apoptosis in different groups. A. Cell viability was measured by the MTT colorimetric assay. B. Cell apoptosis in different groups. Apoptotic cells can be recognized and distinguished using an Annexin V-FITC/PI apoptosis kit for flow cytometry. Data are the mean ± SEM (n=3), each bar represents the mean of three independent experiments carried out in triplicate. *Compared with control group, P<0.05.
