Fig. 2From: Blockade of nicotine sensitization by methanol extracts of Glycyrrhizae radix mediated via antagonism of accumbal oxidative stressEffects of MEGR on extracellular DA levels in the NaccSh. On the 4th after the last nicotine (Nic) injection, rats were challenged with a direct intra-NaccSh infusion of 3.0 mM Nic, and during the withdrawal period the rats were treated with MEGR. All data are expressed as means ± SEM (n = 5–6). Nic: nicotine, S: saline, MEGR: methanol extract of G. radix, MEGR180: 180 mg/kg/day MEGR once a day for 4 consecutive days. # P < 0.05, ### P < 0.001 versus S/DW/S group; $$$ P < 0.001 versus Nic/DW/Nic group (two-way ANOVA followed by the Bonferroni post-hoc test)Back to article page