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Immunohistochemical localization of HPGDS in the ampulla and isthmus of the mouse oviduct. Representative images are shown. Upper panels, Immature mice were killed at 23 d of age (0 h) or treated with 5 IU of PMSG to induce follicular development and killed 48 h later. Lower panel, Eight- to ten-week-old regularly cycling mice were killed on each day of the estrous cycle. Tissues were fixed in Bouin's fixative and embedded in paraffin. Scale bars, 50 μm.
