Figure 2. Protein expression of endothelial nitric oxide synthase (eNOS) (A) and estrogen receptor alpha (ER-α) (B) in coronary arteries from ovariectomized spontaneously hypertensive rats. Data are reported as means±SE (n=4 per group). OVX: ovariectomized; E2: estrogen; DRSP: drospirenone. *P<0.05 compared to Sham, ^#P<0.05 compared to OVX (one-way ANOVA followed by Tukey's post hoctest).