Fig. 5
Effects of Pd CNC-catalyzed ascorbate oxidation on the cytotoxicity. Cell viability of HCT116 cells (a) and IEC6 cells (b) treated with either 1-3 mM ascorbate or 50 μg/mL Pd CNCs or combined ascorbate/ Pd CNCs for 24 h. Error bars were taken from three parallel experiments (n = 3). P values compared to that of corresponding ascorbate alone treatment were calculated by Student´s t-test: *p < 0.05, **p < 0.01. c Fluorescent images of live and dead stains of HCT116 cells exposed to 2.5 mM ascorbate plus 50 μg/mL Pd CNCs. Scale bar = 100 μm
