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Effects of cigarette smoke extract (CSE) and ginsenoside Rg1 on the viability of pulmonary fibroblasts. (a) Cytotoxicity of CSE to MRC5 cells was measured using the CCK-8 assay. (b) Effect of ginsenoside Rg1 on cell viability. Values are expressed as the mean ± SD of three independent experiments, each performed in triplicate. ∗p < 0.05 and ∗∗p < 0.01 versus the corresponding Sham group.
