Table 2.

Plasma steroid hormone levels in C57BL/6J female mice

Treatment	17β-Estradiol	Progesterone
Sham at Estrus	6.4 ± 0.6*	5,151.5 ± 888.6†
Ovariectomized
Placebo	3.9 ± 0.2	554.4 ± 79.5
17β-Estradiol	88.7 ± 14.6 ‡	3,019.1 ± 866.2†
Progesterone	7.7 ± 2.0	3,511.6 ± 361.5‡
17β-Estradiol + progesterone	56.0 ± 8.3‡	5,607.3 ± 379.8‡
Control at Estrus	11.7 ± 3.5	4,155.0 ± 262.0
Tamoxifen	16.8 ± 5.8	1,697.5 ± 111.7†

Values are expressed as means ± SE in pg/ml (n=10). Assessment of the effect of castration and hormonal replacement on plasma sex steroid levels. Plasma sex steroid hormone concentration in C57BL/6J female mice at estrus or following ovariectomy and hormonal replacement with 17β-estradiol and/or progesterone.

^*P < 0.05, † P < 0.01,‡P < 0.001.