Fig. 2.

a Effects of different doses of LM on the immobility time in the FST, b the antidepressant-like effect of the co-administration of sub-effective dose of LM (5 mg/kg, i.g.) with fluoxetine (5 mg/kg, i.p.) in the FST, c the antidepressant-like effect of the co-administration of sub-effective dose of LM (5 mg/kg, i.g.) with reboxetine (2.5 mg/kg, i.p.) in the FST, d the antidepressant-like effect of the co-administration of sub-effective dose of LM (5 mg/kg, i.g.) with tianeptine (15 mg/kg, i.p.) in the FST. The values were represented as the mean ± SEM (n = 10). Data were analyzed by t test and one-way ANOVAs, followed by Tukey’s post hoc test. ***p < 0.001; **p < 0.01; *p < 0.05 compared with the blank control group