MorulaBlastocystEmbryo, MammalianEmbryonic DevelopmentEmbryonic and Fetal DevelopmentCleavage Stage, OvumEmbryo, NonmammalianZygoteBlastomeresFertilization in VitroChick EmbryoPregnancyGene Expression Regulation, DevelopmentalCloning, OrganismEmbryo ImplantationOocytesFetal ViabilityParthenogenesisEmbryo TransferCulture TechniquesFallopian TubesNuclear Transfer TechniquesMice, Inbred StrainsEmbryo LossCattleCulture MediaTime FactorsEmbryo Implantation, DelayedEmbryo Culture TechniquesCryopreservationRNA, MessengerIn Situ HybridizationGastrulaEctodermVitrificationBody PatterningMice, Inbred ICREndodermTrophoblastsPregnancy RateMesodermCells, CulturedEctogenesisMorphogenesisCochlear ImplantationMolecular Sequence DataSperm Injections, IntracytoplasmicUterusEmbryo DispositionCell DifferentiationZebrafishChimeraFertilizationMice, Inbred C57BLTranscription FactorsBase SequenceLens Implantation, IntraocularHomeodomain ProteinsSuperovulationZona PellucidaMice, Inbred CBASingle Embryo TransferOvumMicroinjectionsEndometriumCell NucleusEmbryo ResearchYolk SacZebrafish ProteinsSomitesGene ExpressionTreatment OutcomeOctamer Transcription Factor-3Embryonic InductionPacemaker, ArtificialGerm LayersCell CountReverse Transcriptase Polymerase Chain ReactionMutationImmunohistochemistryOogenesisSignal TransductionCell DivisionPhenotypeCell LineageStentsXenopus ProteinsDNA-Binding ProteinsNervous SystemAmino Acid SequenceGestational AgeDeciduaProsthesis DesignMice, TransgenicNodal ProteinMice, Mutant StrainsNeural CrestMice, KnockoutSpermatozoaGenes, Lethal