title: Ovarian changes during gestation in pony mares.
mesh_terms: D000818:Animals; D005260:Female; D006064:Gonadotropins, Equine / Q000097:blood; D006736:Horses / Q000502:physiology*; D006080:Ovarian Follicle / Q000033:anatomy & histology; D010053:Ovary / Q000033:anatomy & histology / Q000502:physiology*; D010060:Ovulation; D011247:Pregnancy; D011270:Pregnancy, Animal; D012621:Seasons
chemical_list: D006064:Gonadotropins, Equine