Table 1.

Number (mean ± SEM), estimated weight (mean ± SEM) and protein content (mean ± SEM) of punches from the 13 different brain regions.

		Number of punches	Estimated weight (mg)	Protein content (mg)
High aromatase	mPOA	4.85 ± 0.17	0.93 ± 0.03	0.055 ± 0.003
	Hp	3.30 ± 0.21	0.63 ± 0.04	0.035 ± 0.003
	VMN	1.50 ± 0.11	0.29 ± 0.02	0.019 ± 0.004
	BST	1.45 ± 0.11	0.28 ± 0.02	0.011 ± 0.001
	NCM	4.35 ± 0.23	0.83 ± 0.04	0.055 ± 0.004
	TnA	2.45 ± 0.17	0.47 ± 0.03	0.026 ± 0.003
Low aromatase	Area X	2.35 ± 0.19	0.45 ± 0.04	0.026 ± 0.003
	MMAN	2.37 ± 0.16	0.45 ± 0.03	0.026 ± 0.003
	HVC	2.80 ± 0.17	0.54 ± 0.03	0.039 ± 0.003
	RA	1.94 ± 0.20	0.37 ± 0.04	0.027 ± 0.003
	GCt	1.80 ± 0.12	0.34 ± 0.02	0.020 ± 0.002
	OL	3.35 ± 0.18	0.64 ± 0.03	0.036 ± 0.003
	Cb	3.30 ± 0.24	0.63 ± 0.05	0.041 ± 0.003

Note: These values correspond to punches obtained from one side of the brain only. The left side was used to determine aromatase activity and the right side for E₂ concentration. For each region within a subject, the number of punches collected from the right and left sides of the brain was always identical.