Figure 1From: Influence of E-smoking liquids on human periodontal ligament fibroblasts Effect of the different components and flavors of e-cigarettes up to 96 h, as assessed by PrestoBlue Cell viability assay. *p < 0.001 for cells incubated with menthol-flavored liquids versus controls for 24 h and for cells incubated with menthol-flavored liquids versus controls and nicotine-treated cells 48-96 h.Back to article page