TrophoblastsChoriocarcinomaPlacentaPregnancyChorionic VilliPregnancy Trimester, FirstEmbryo ImplantationHLA-G AntigensStem CellsPlacentationEmbryo, MammalianCells, CulturedCell LineCell FusionBlastocystChorionic GonadotropinEmbryonic Stem CellsRNA, MessengerCell DifferentiationDeciduaReverse Transcriptase Polymerase Chain ReactionCell MovementEmbryonic DevelopmentStem Cell TransplantationEmbryo ResearchPregnancy ProteinsHematopoietic Stem CellsPluripotent Stem CellsBlastomeresAdult Stem CellsEmbryonic and Fetal DevelopmentEmbryo, NonmammalianGiant CellsGene Expression Regulation, DevelopmentalInduced Pluripotent Stem CellsMaternal-Fetal ExchangeFertilization in VitroImmunohistochemistryChick EmbryoCell LineageEndometriumPre-EclampsiaHematopoietic Stem Cell TransplantationStem Cell NicheGestational AgeBase SequenceNeural Stem CellsEmbryo Culture TechniquesGene ExpressionUterine NeoplasmsPersonhoodBeginning of Human LifeCryopreservationMultipotent Stem CellsCell ProliferationGene Expression RegulationSignal TransductionPregnancy Trimester, ThirdCoculture TechniquesMolecular Sequence DataEmbryo DispositionEmbryo TransferMesenchymal Stem Cell TransplantationMesenchymal Stromal CellsBlotting, WesternCell Culture TechniquesTranscription FactorsStem Cell FactorCulture Media, ConditionedCulture TechniquesCloning, OrganismChorionPlacental LactogenOctamer Transcription Factor-3Embryo LossUterusFlow CytometryHLA AntigensCell SurvivalGene Expression ProfilingFetal Growth RetardationFetusTotipotent Stem CellsZygoteCell HypoxiaIn Situ HybridizationCloning, MolecularTime FactorsApoptosisFluorescent Antibody TechniqueMorulaAmino Acid SequenceCell AdhesionModels, BiologicalHomeodomain ProteinsCell SeparationPregnancy RateStem Cell ResearchMatrix Metalloproteinase 9Germ Layers