Embryonic Stem CellsSheepStem CellsPluripotent Stem CellsCell DifferentiationEmbryo, MammalianEmbryo Culture TechniquesInduced Pluripotent Stem CellsBlastocystStem Cell TransplantationCell Culture TechniquesFeeder CellsHematopoietic Stem CellsSheep DiseasesRheumatoid FactorSheep, DomesticAdult Stem CellsEmbryo ResearchHemagglutination TestsBetamethasoneFetusOctamer Transcription Factor-3Cell LineCell LineageNeural Stem Cellsgamma-GlobulinsPregnancyHematopoietic Stem Cell TransplantationStem Cell NicheErythrocytesGene Expression Regulation, DevelopmentalEmbryonic DevelopmentMultipotent Stem CellsCells, CulturedEmbryo ImplantationAnimals, NewbornBlastomeresMesenchymal Stromal CellsMesenchymal Stem Cell TransplantationTotipotent Stem CellsEmbryoid BodiesFetal HypoxiaSOXB1 Transcription FactorsStem Cell FactorTeratomaHomeodomain ProteinsCell ProliferationGerm LayersStem Cell ResearchEmbryonic and Fetal DevelopmentEmbryo, NonmammalianGestational AgeFertilization in VitroChick EmbryoTranscription FactorsGene Expression ProfilingChimeraPrenatal Exposure Delayed EffectsCloning, OrganismCryopreservationEndodermSignal TransductionBeginning of Human LifePersonhoodArthritis, RheumatoidNuclear ReprogrammingFetal Stem CellsBase SequenceReverse Transcriptase Polymerase Chain ReactionCell SeparationMolecular Sequence DataRegenerative MedicineCoculture TechniquesEmbryo DispositionMice, Inbred C57BLPlant StemsLeukemia Inhibitory FactorFlow CytometryHematopoiesisGene TargetingGerm CellsBiological MarkersGene Expression RegulationPhenotypeStage-Specific Embryonic AntigensImmunohistochemistryNeoplastic Stem CellsGreen Fluorescent ProteinsTime FactorsRegenerationGene ExpressionRNA, MessengerModels, BiologicalMesodermBone Marrow CellsNeuronsAgingMice, SCIDBone Morphogenetic Protein 4Karyotyping