Figure 1From: Aromatase inhibitor treatment with an intravaginal device and its effect on pre-ovulatory ovarian follicles in a bovine modelDominant follicle diameter profiles (mean ± SEM). Heifers were treated with a blank (control, n=15) or a letrozole-containing intravaginal device (letrozole, n=15). Devices were inserted on Day 1, indicated by the arrow (Day 0 = wave emergence).Back to article page