FIGURE 6.

Intracellular ROS induced by 1 and 2 mM H₂O₂ for 2 h treatment with PVM in 3T3 and HaCaT cells. H₂O₂: positive control. White columns correspond to 1 mM H₂O₂ and gray columns correspond to 2 mM H₂O₂. Results are expressed as mean ± standard error of n = 3. A two-way analysis of variance (ANOVA) and a Bonferroni post hoc assay have been performed. Statistical differences were considered as follows: *p ≤ 0.05, **p ≤ 0.01 and ***p ≤ 0.001 compared with the correspondent positive control.