Table 2.

Total ERK and CREB protein levels after CPP expression

		Male		Female
Protein		Saline	Cocaine	Saline	Cocaine
ERK
	NAc	87.2±2.9	89.4±4.7	88.0±3.6	84.8±1.9
	CPu	111.8±3.0	109.8±1.8	109.7±1.9	109.3± 3.4
	PfC	74.1±3.9	71.9±3.5	66.3±1.9	72.4±2.1
	HIP	75.4±2.2	82.9±6.3	81.4±3.5	77.5±3.1
CREB
	NAc	94.8±8.4	85.2±5.1	77.8±4.9	76.4±5.7
	CPu	119.9±10	118.3±8.5	117.0±6	119.7±6.5
	PfC	112.2±5.9	104.2±3.4	100.8±2.3	109.1±3.3
	HIP	107.6±8.8	116.9±8.5	131.2±12.8	120.3±11.3

Data are shown as mean arbitrary densitometric units (±SEM) normalized to α-tubulin (n = 4 animals per group). No significant differences were observed based on treatment or sex.