title: Formation of ovarian cysts in aged irregularly cycling rats.
mesh_terms: D000375:Aging; D000818:Animals; D004971:Estrus; D005260:Female; D006107:Granulosa Cells / Q000648:ultrastructure; D008854:Microscopy, Electron; D010048:Ovarian Cysts / Q000209:etiology*; D006080:Ovarian Follicle / Q000648:ultrastructure*; D011247:Pregnancy; D011359:Proestrus; D051381:Rats; D011919:Rats, Inbred Strains / Q000502:physiology*