Figure 2: Antagonistic effect of pindolol on the anxiolytic-like effect of the aqueous extract of A. multiflora stem bark. Pindolol (10 mg/kg) was given 30 min before the extract and during the same period. Data are expressed as mean ± SEM of the time spent in the closed and open arms in rats given 5 min test 30 min after the last administration of the extract. * , compared to the vehicle-treated control group, rats per group.