Figure 1From: Evaluation of the cytotoxicity, mutagenicity and antimutagenicity of a natural antidepressant, Hypericum perforatum L. (St. John’s wort), on vegetal and animal test systems The mean percentage and standard deviation of the mitotic index (MI) for the negative control group (CO-) and the group treated with St. John´s Wort (SJW) at three concentrations (mg/mL). Treatment time: Control (Co) = 0 h, Treated (Tr) = 24 h, Recovery (Re) = 24 h. * The results are statistically significant in relation to Recovery (24 h) SJW [3.0].Back to article page