TrophoblastsEmbryo, MammalianEmbryo ImplantationEmbryo, NonmammalianPlacentaPregnancyChick EmbryoPlacentationBlastocystChorionic VilliChoriocarcinomaEmbryonic DevelopmentDeciduaPregnancy Trimester, FirstGene Expression Regulation, DevelopmentalEmbryo LossEmbryonic and Fetal DevelopmentPregnancy ProteinsFertilization in VitroBlastomeresHLA-G AntigensCleavage Stage, OvumUterusChorionCell DifferentiationIn Situ HybridizationMorulaGiant CellsPre-EclampsiaRNA, MessengerPlacenta DiseasesEndometriumMaternal-Fetal ExchangeCulture TechniquesZygoteEmbryo DispositionPlacental LactogenGestational AgeImmunohistochemistryChorionic GonadotropinPregnancy, AnimalGastrulaZebrafishEctodermBody PatterningCryopreservationNuclear Transfer TechniquesEctogenesisCell LineCloning, OrganismCells, CulturedMolecular Sequence DataOocytesMesodermFibroblast Growth Factor 4Transcription FactorsMorphogenesisCell MovementGene ExpressionReverse Transcriptase Polymerase Chain ReactionUterine NeoplasmsCell LineageEmbryo ResearchHomeodomain ProteinsBase SequenceSingle Embryo TransferExtraembryonic MembranesEndodermPlacental CirculationPregnancy Trimester, ThirdSignal TransductionHydatidiform MoleYolk SacAllantoisKeratin-7Zebrafish ProteinsPregnancy RateTime FactorsChimeraFetal ViabilityParthenogenesisMice, Inbred ICREmbryonic Stem CellsStem CellsFetal Growth RetardationAbortion, SpontaneousEmbryonic InductionPregnancy, TubalSperm Injections, IntracytoplasmicCattleXenopus ProteinsGene Expression RegulationAmino Acid SequenceFetal DeathTrophoblastic NeoplasmsNodal ProteinSeedsBlotting, WesternFertilizationMice, Inbred Strains