PlacentaPregnancyTrophoblastsChorionic VilliMaternal-Fetal ExchangePlacenta DiseasesPlacenta, RetainedChorionPregnancy ProteinsPre-EclampsiaPlacental LactogenCalcifying NanoparticlesExtraembryonic MembranesDeciduaPregnancy Trimester, ThirdPlacentationFetusAmnionUterusLabor, ObstetricPregnancy, AnimalPregnancy Trimester, FirstPlacental CirculationGestational AgeEquidaeCulture TechniquesFetal Growth RetardationPregnancy-Specific beta 1-GlycoproteinsChoriocarcinomaHydatidiform MoleRNA, MessengerAmniotic FluidFetal BloodFetal DevelopmentImmunohistochemistryFetal WeightPregnancy in DiabeticsObstetric Labor, PrematurePregnancy Complications, InfectiousSheepEndometriumDelivery, ObstetricUterine NeoplasmsFetal DeathGene ExpressionEmbryonic and Fetal DevelopmentInfant, NewbornPregnancy ComplicationsDNA MethylationChorionic GonadotropinIn Situ HybridizationTissue DistributionGenomic ImprintingProgesteroneBlotting, WesternBlotting, NorthernBase SequenceMolecular Sequence DataReverse Transcriptase Polymerase Chain ReactionPolymerase Chain ReactionGene Expression Regulation, DevelopmentalDNAGene Expression RegulationCells, CulturedCattleGlycoproteinsEmbryo, MammalianGene Expression ProfilingAmino Acid SequenceMolecular WeightCase-Control StudiesCell LineBiological MarkersDNA, ComplementaryKineticsSwineTime FactorsTranscription, GeneticCloning, Molecular