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Panax notoginseng polysaccharides have no cytotoxic effect on PK15 cells. PK15 cells were pretreated with different concentrations of Panax notoginseng polysaccharides for 24 h at 37 °C, and then 10 μL Enhanced Cell Counting Kit-8 was added to each hole for 1 h at 37 °C. We measured absorbance at 450 nm. All data are presented as means ± SD and were analyzed by GraphPad Prism software (GraphPad Software, San Diego, CA, USA) using one-way ANOVA (ns = not significant).
