Fig. 4
Effect of parsley treatment on the brain level of neurotransmitters. a–c The mean concentration of extra cellular dopamine, serotonin and acetylcholine in the animals brain tissues of each group (F = 249.63, F = 31.24, F = 169.79), respectively. Data are expressed as mean ± SEM (N = 8). *P < 0.05, **P < 0.01,***P < 0.001, for parsley (Groups B and C), Cd (Group D) and parsley + Cd treated groups (Groups E and F) versus control (Group A); #P < 0.05 for parsley + Cd treated groups versus cadmium group; +P < 0.05 for low dose parsley treated group versus high dose parsley treated group