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A375 human melanoma cell inhibition after exposure to different concentrations of Rudbeckia hirta extract (10, 25 and 50 µg/mL, respectively). The data is represented as mean ± SD. One-way ANOVA and Dunnett’s multiple comparison test were used to determine the significant differences between the control and treated groups (* p ≤ 0.1; **** p ≤ 0.0001 vs. control).
