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. 2018 Aug 9;13(8):e0201855. doi: 10.1371/journal.pone.0201855

Fig 8. Cell proliferation and cytotoxicity assays in the presence of N-acetyl-l-cysteine (NAC).

Fig 8

The effects of the antioxidant NAC on the proliferation and cytotoxicity of human gingival fibroblasts (HGFs) were assessed. (A) Results of water-soluble tetrazolium salt (WST-8) proliferation assay of HGFs grown at different glucose and NAC concentrations. (B) Lactate dehydrogenase (LDH) levels in HGFs grown at different glucose and NAC concentrations. Data are expressed as mean values ± SD; mean differences between groups were analyzed using the Tukey–Kramer test. *p < 0.05 compared to values in control group.