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The levels of neurotransmitters in brain regions. The concentrations of 5-HT and 5-HIAA and the 5-HIAA/5-HT ratio in the prefrontal cortex (A–C) and hypothalamus (D–F) brain regions, respectively. Data were expressed as mean ± S.E.M and analyzed by two-way ANOVA with Tukey’s post hoc test. Different letters (a and b) above the bars indicate statistically significant differences at p < 0.05.
