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Effects of HAS on apoptosis in H2O2-stimulated PC12 cells. (a) Apoptotic assay by DAPI staining and observed under a 100x microscope. (b) Apoptotic assay by flow cytometry. Vitamin C (100 μM) was used as the positive control. The values were represented as the mean ± SD (n = 3). ∗∗P < 0.01 vs. the control group.
