MorulaEmbryo, MammalianBlastocystEmbryonic DevelopmentEmbryonic and Fetal DevelopmentYolk SacGene Expression Regulation, DevelopmentalEmbryo, NonmammalianExtraembryonic MembranesPregnancyChick EmbryoGastrulaAllantoisEmbryo ImplantationCleavage Stage, OvumEndodermChimeraFertilization in VitroTrophoblastsBlastomeresZygoteTranscription FactorsCloning, OrganismPlacentaCytokinesisOocytesMolecular Sequence DataIn Situ HybridizationCell LineageMesodermDrosophila ProteinsGestational AgeCell CycleMutationGene TargetingCell PolarityDrosophilaEmbryo Culture TechniquesCell DivisionBlood VesselsCell DifferentiationAmino Acid SequenceParthenogenesisMice, Inbred C57BLFetal ViabilityCulture TechniquesCryopreservationCell Cycle ProteinsEmbryo TransferVitrificationModels, BiologicalFallopian TubesEmbryo LossStem CellsSignal TransductionSaccharomyces cerevisiae ProteinsRNA InterferenceCattleCell MovementNuclear ProteinsMice, KnockoutSaccharomyces cerevisiaeCulture MediaProtein-Serine-Threonine KinasesEctodermProtein BindingFertilizationPregnancy RateOvumHeLa CellsSperm Injections, IntracytoplasmicZebrafishZona PellucidaEmbryo DispositionSuperovulationMice, Inbred StrainsBody PatterningOogenesisOctamer Transcription Factor-3Time FactorsMice, Inbred ICRRNA, MessengerBase SequenceMorphogenesisCell NucleusMicroinjectionsEmbryo ResearchZebrafish ProteinsSingle Embryo TransferMice, Inbred CBAEctogenesisSpermatozoaNuclear Transfer TechniquesHomeodomain ProteinsMicroscopy, ConfocalCell CountXenopus ProteinsCytoplasmGene ExpressionSwine