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Representative photomicrographs of macrophages (F4/80-stained) and neutrophils (GR-1-stained) with methyl green or hematoxylin counterstain in sections of cervix from mice on day 16.5 postbreeding or postpartum (PP*, indicates for Veh group postbreeding day 19 and for onapristone [Ona] and RU486 groups day 17 postbreeding). Mice were treated with vehicle (Veh) or PR antagonist (Ona or RU486).
