Ovarian follicular changes in gray squirrels as affected by season, age, and reproductive state.
D000367:Age Factors; D000818:Animals; D005260:Female; D006080:Ovarian Follicle / Q000033:anatomy & histology / Q000502:physiology*; D011247:Pregnancy; D012098:Reproduction; D012589:Sciuridae / Q000502:physiology*; D012621:Seasons