Stem CellsEmbryo, MammalianEmbryo ImplantationEmbryonic Stem CellsBlastocystEmbryo, NonmammalianEmbryo ResearchStem Cell TransplantationEmbryonic DevelopmentBlastomeresHematopoietic Stem CellsChick EmbryoPluripotent Stem CellsAdult Stem CellsFertilization in VitroEmbryonic and Fetal DevelopmentCell DifferentiationHematopoietic Stem Cell TransplantationInduced Pluripotent Stem CellsPregnancyStem Cell NichePersonhoodNeural Stem CellsCryopreservationGene Expression Regulation, DevelopmentalEmbryo DispositionBeginning of Human LifeMultipotent Stem CellsCell LineageEmbryo Culture TechniquesMesenchymal Stem Cell TransplantationMesenchymal Stromal CellsStem Cell FactorEmbryo TransferZygoteCloning, OrganismCulture TechniquesPregnancy RateMorulaTotipotent Stem CellsCells, CulturedPreimplantation DiagnosisOctamer Transcription Factor-3Embryo LossStem Cell ResearchEctogenesisMolecular Sequence DataValue of LifeMosaicismLifeOocytesCell Culture TechniquesPlant StemsSperm Injections, IntracytoplasmicCell LineBase SequenceSingle Embryo TransferEmbryologyFetal Stem CellsGerm LayersAnatomy, ArtisticMesodermTime FactorsHomeodomain ProteinsTheologyResearch Embryo CreationIncubatorsCleavage Stage, OvumCell ProliferationTranscription FactorsIn Situ HybridizationRNA, MessengerSignal TransductionPhenotypeImmunohistochemistryHematopoietic Stem Cell MobilizationCulture MediaFetal ViabilityTrophoblastsPrenatal InjuriesNeoplastic Stem CellsGestational AgeEthylene GlycolFetal ResearchMice, Inbred C57BLYolk SacMorphogenesisBone Marrow CellsModels, BiologicalHematopoiesisCryoprotective AgentsFetusCoculture TechniquesZebrafishVitrificationAmino Acid SequenceReproductive TechniquesCloning, MolecularMoralsCell Separation