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Evaluation of efflux pump inhibition of the products when associated with ciprofloxacin and ethidium bromide against S. aureus strain-overexpressing MepA efflux pumps. Each result is expressed as geometric mean ± geometric standard deviation (SD) of three simultaneous experiments. Statistical significance was determined by one-way ANOVA and Bonferroni’s post hoc test (ns—no significance; * p < 0.05; ** p < 0.01, **** p < 0.0001 when compared to the negative control group).
