Fig. 3.

MTT reduction [3-(4,5-dimethyl-thiazol-2-yl) 2,5-diphenyltetrazolium bromide] in cultured rat hepatocytes maintained in the presence of different LTT NPs concentrations for 72 h. Each individual hepatocyte culture without LTT NPs was studied as a negative control group (Control⁻). MMC alone added group was considered as a positive control (Control⁺). Values are mean ± standard deviation (n = 6). Asterisk symbol presents significant differences at the p < 0.05 level from the control⁻ group