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Values displayed are normalized with the cerebellum as reference region, mean +/- standard deviation. A one-way ANOVA contrasting all brain regions was found to be significant F22,368 = 284.251, p < 0.001 with posthoc analysis contrasting each brain region to the cerebellum found each region to be significantly different than the cerebellum which is devoid of opioid receptors (p < 0.001).
