OvariectomyCastrationEstradiolEstrogensOvaryProgesteroneUterusEstrusLuteinizing HormoneDiestrusOpen Reading FramesFollicle Stimulating HormoneRats, Sprague-DawleyOsteoporosisOrgan SizeSexual MaturationEstrogen Replacement TherapyFemurPregnancy, AnimalEstrous CycleGonadal Steroid HormonesBone DensityProestrusBone ResorptionMammary Neoplasms, ExperimentalBody WeightOvulationTibiaTestosteroneBone and BonesSex CharacteristicsPregnancyPituitary GlandAnestrusBone Diseases, MetabolicPerphenazineProlactinDrug ImplantsEstrogen Receptor alphaRats, WistarOrchiectomyTime FactorsOvarian FollicleMetestrusEstrogen Receptor betaSheepMethylnitrosoureaNorpregnenesTooth SocketX-Ray MicrotomographyGonadotropin-Releasing HormoneReceptors, EstrogenRats, Inbred StrainsRaloxifeneEstrogen AntagonistsBone Remodeling9,10-Dimethyl-1,2-benzanthraceneMetrial GlandGonadotropins, PituitaryAlendronateDisease Models, AnimalPseudopregnancyGastric DilatationAgingMammary Glands, AnimalRNA, MessengerPhytoestrogensEmbryo Implantation, DelayedMice, Inbred C57BLFractures, OpenMedroxyprogesteroneMaprotilineInhibinsRandom AllocationOsteoclastsFeedbackHarderian GlandOvum TransportVaginaAdrenalectomyBone Density Conservation AgentsStiflePituitary Hormone-Releasing HormonesCissusCorpus LuteumOsteoporosis, PostmenopausalSecretory RateStomach VolvulusLagomorphaModels, AnimalCattleMesocricetusOsteogenesisPostpartum PeriodMenopause