Cervix MucusEndometriumMucusUterusCervix UteriMenstrual CycleEmbryo ImplantationEndometriosisUterine Cervical NeoplasmsPregnancyPregnancy, AnimalEndometrial NeoplasmsDeciduaEndometrial HyperplasiaUterine DiseasesProgesteroneMyometriumUterine NeoplasmsMenstruationEstradiolCervical RipeningImmunohistochemistryEstrous CyclePregnancy ProteinsHysterectomyUterine HemorrhagePseudopregnancyUterine ContractionEstrusOvariectomyLuteal PhaseEndometritisStromal CellsRNA, MessengerVaginaGenitalia, FemaleFallopian TubesInfertility, FemaleMucinsMenorrhagiaEpitheliumLabor, ObstetricLevonorgestrelMetrorrhagiaReceptors, ProgesteroneEstrogensOxytocinUterine Cervical DiseasesSheepHysteroscopyIn Situ HybridizationPlacentaGonanesDinoprostMifepristoneReceptors, OxytocinMucociliary ClearanceRelaxinPolypsContraceptive Agents, FemaleEpithelial CellsProgestinsPlacentation