Stem CellsEmbryo, MammalianFetusBlastocystEmbryo ImplantationEmbryo, NonmammalianEmbryonic Stem CellsChick EmbryoEmbryonic DevelopmentEmbryo ResearchBlastomeresStem Cell TransplantationPregnancyHematopoietic Stem CellsPluripotent Stem CellsEmbryonic and Fetal DevelopmentFertilization in VitroAdult Stem CellsCell DifferentiationGene Expression Regulation, DevelopmentalInduced Pluripotent Stem CellsCryopreservationEmbryo DispositionHematopoietic Stem Cell TransplantationStem Cell NichePersonhoodNeural Stem CellsCell LineageBeginning of Human LifeEmbryo Culture TechniquesMultipotent Stem CellsCloning, OrganismZygoteMolecular Sequence DataGestational AgeMesenchymal Stem Cell TransplantationMorulaMesenchymal Stromal CellsEmbryo LossBase SequenceStem Cell FactorEmbryo TransferCulture TechniquesPregnancy RateCells, CulturedOocytesOctamer Transcription Factor-3Cloning, MolecularTotipotent Stem CellsPreimplantation DiagnosisCell Culture TechniquesEctogenesisCleavage Stage, OvumCell LineTime FactorsGerm LayersMesodermMosaicismCampylobacter fetusSingle Embryo TransferAmino Acid SequenceSperm Injections, IntracytoplasmicHomeodomain ProteinsRNA, MessengerValue of LifeLifeStem Cell ResearchIn Situ HybridizationFetal ViabilityTranscription FactorsEmbryologyPhenotypeResearch Embryo CreationPlant StemsImmunohistochemistryCulture MediaSignal TransductionFetal Stem CellsTrophoblastsMorphogenesisZebrafishIncubatorsAnatomy, ArtisticTritrichomonas foetusTheologyModels, BiologicalNuclear Transfer TechniquesMice, Inbred C57BLCell ProliferationYolk SacGene ExpressionMutationGerm CellsCoculture TechniquesPrenatal InjuriesGene Expression ProfilingAneuploidyEthylene GlycolFetal ResearchBody Patterning