TrophoblastsPlacentaPlacentationPregnancyChoriocarcinomaChorionic VilliPregnancy Trimester, FirstEmbryo ImplantationDeciduaPregnancy ProteinsHLA-G AntigensGiant CellsBlastocystPlacental LactogenMaternal-Fetal ExchangePre-EclampsiaChorionUterusEndometriumCells, CulturedPlacenta DiseasesPregnancy, AnimalChorionic GonadotropinCell LineUterine NeoplasmsCell DifferentiationRNA, MessengerGestational AgePregnancy Trimester, ThirdImmunohistochemistryCell MovementGene Expression Regulation, DevelopmentalKeratin-7Metrial GlandExtraembryonic MembranesTrophoblastic Tumor, Placental SitePlacental CirculationEmbryonic DevelopmentCell FusionReverse Transcriptase Polymerase Chain ReactionHLA AntigensMethemalbuminAntigens, CD82Fetal Growth RetardationBlotting, WesternEmbryo LossEmbryo, MammalianMatrix Metalloproteinase 9Placental HormonesGene ExpressionGene Expression RegulationPregnancy TrimestersIn Situ HybridizationCoculture TechniquesHistocompatibility Antigens Class IMatrix Metalloproteinase 2Abortion, SpontaneousFetusKeratinsAllantoisAbortion, HabitualGlycoprotein Hormones, alpha SubunitAmino Acid Transport System ASCBlotting, NorthernChlorpropamideCulture Media, ConditionedCell AdhesionEmbryonic and Fetal DevelopmentCell LineageDiazooxonorleucineApoptosisProgesteroneSignal TransductionKiller Cells, NaturalChorionic Gonadotropin, beta Subunit, HumanCell ProliferationNodal ProteinLamininSpheroids, CellularMice, Inbred StrainsPregnancy, EctopicStem CellsTissue Inhibitor of Metalloproteinase-1Transcription FactorsBase Sequence