Follicular development during four stages of the estrous cycle of beef cattle.
D000818:Animals; D002417:Cattle / Q000502:physiology*; D004967:Estrogens / Q000097:blood; D004971:Estrus; D005260:Female; D009929:Organ Size; D006080:Ovarian Follicle / Q000502:physiology*; D010053:Ovary / Q000033:anatomy & histology; D011247:Pregnancy; D011372:Progestins / Q000097:blood
D004967:Estrogens; D011372:Progestins