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Mean ± SEM (n= 5-6 per group) ratio of phospho-(Ser40)-tyrosine hydroxylase/tubulin in caudate-putamen (CPu) and nucleus accumbens (NAc) of food-restricted (FR) rats injected 20 min prior to sacrifice with 0.0, 0.5 or 5.0 mg/kg d-amphetamine (i.p.) and expressed in comparison to the normalized control ad libitum (AL) fed group injected with saline vehicle. Graphed results are displayed with representative immunoblots. *p<.05; **p<.01
