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TPPU protected H2O2-injured PC-12 cells. (a) The CCK-8 assay was used to assess the effect of TPPU on H2O2-induced oxidative cell injury. (b) Hoechst 33342 staining was used to determine apoptotic cells. ∗∗∗p < 0.001 compared to H2O2; ###p < 0.001 compared to H2O2.
