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Cross sectional illustration of a human ovary with an emphasis on the process of ovulation over ~14 days. (A) Cross sectional illustration of a chicken ovary with an emphasis on the process of ovulation over ~27 hours.(B) Formalin fixed hematoxylin and eosin stained tissues of a fully functional healthy ovary showing immature (arrow) and F-series follicles at 1.25× magnification (C) and the ovarian surface epithelium (OSE) at 40 × magnification (D).
