ProlactinPregnancyReceptors, ProlactinPregnancy ComplicationsPregnancy OutcomePregnancy, AnimalPregnancy, EctopicPregnancy Trimester, FirstBromocriptinePregnancy RatePregnancy Trimester, ThirdPregnancy Complications, CardiovascularPregnancy TrimestersPregnancy TestsPregnancy, MultiplePregnancy in DiabeticsPregnancy, TubalPregnancy Trimester, SecondHyperprolactinemiaPregnancy Complications, NeoplasticPregnancy in AdolescenceLactationPregnancy Complications, InfectiousPregnancy ProteinsAbortion, SpontaneousPituitary GlandThyrotropin-Releasing HormonePituitary Gland, AnteriorProgesteronePregnancy, UnplannedPregnancy, High-RiskGestational AgePregnancy, UnwantedGrowth HormoneMammary Glands, AnimalPlacentaPregnancy Complications, HematologicPlacental LactogenPituitary NeoplasmsErgolinesInfant, NewbornLuteinizing HormonePregnancy, ProlongedUterusPre-EclampsiaPregnancy, TwinLactation DisordersEstradiolFetal DeathEmbryo ImplantationProlactinomaAbortion, InducedPregnancy, AbdominalPregnancy Complications, ParasiticDeciduaPregnancy MaintenanceUltrasonography, PrenatalEstrusFertilization in VitroMaternal-Fetal ExchangeEmbryo TransferParityPrenatal CareFollicle Stimulating HormoneSheepPrenatal Exposure Delayed EffectsBirth WeightPseudopregnancyChorionic GonadotropinInfertility, FemaleLabor, ObstetricRadioimmunoassayCorpus LuteumPregnancy Reduction, MultifetalGalactorrheaMaternal AgeTime FactorsHypertension, Pregnancy-InducedCesarean SectionEndometriumPerphenazineFetal Growth RetardationFetusOvaryFetal DevelopmentPremature BirthLactotrophsAbnormalities, Drug-InducedTrophoblastsPuerperal DisordersTwinsRNA, MessengerHormonesFertilityObstetric Labor, PrematureCongenital AbnormalitiesCaseinsHydrocortisoneSTAT5 Transcription FactorProspective Studies