Fig. 2. Antrum formation in goat ovarian follicles cultured in vitro for 18 in a-MEM+
alone (cultured control), a-MEM+ plus EGF at 50 ng/mL (EGF 50) or a-MEM+ plus
EGF at 100 ng/mL (EGF 100). A,BDiffers significantly among treatments in the same
culture period (P < 0.05). a,bDiffers significantly among culture periods within the
same growth condition (P < 0.05).