Embryonic Stem CellsStem CellsSkinCell DifferentiationPluripotent Stem CellsPrenatal InjuriesKeratinocytesStem Cell TransplantationCells, CulturedSkin Physiological PhenomenaKeratin-17EpidermisUmbilical VeinsEmbryo, MammalianHair FollicleOctamer Transcription Factor-3Hematopoietic Stem CellsFibroblastsInduced Pluripotent Stem CellsUmbilical ArteriesCell Culture TechniquesCell LineageDermisAdult Stem CellsCell LineFetusSkin AgingSkin NeoplasmsEmbryoid BodiesWound HealingNeural Stem CellsSebaceous GlandsEmbryo ResearchSOXB1 Transcription FactorsGene Expression Regulation, DevelopmentalCell ProliferationMultipotent Stem CellsTeratomaHematopoietic Stem Cell TransplantationStem Cell NicheUltraviolet RaysTotipotent Stem CellsHomeodomain ProteinsMesenchymal Stromal CellsGerm LayersMesenchymal Stem Cell TransplantationSkin TransplantationMelanocytesEndodermChimeraLeukemia Inhibitory FactorStem Cell ResearchSignal TransductionGene TargetingGene Expression ProfilingStem Cell FactorGene Expression RegulationReverse Transcriptase Polymerase Chain ReactionTranscription FactorsMice, Inbred C57BLBlastocystPregnancyFetal BloodStage-Specific Embryonic AntigensCell SurvivalNuclear ReprogrammingFlow CytometryFeeder CellsCell SeparationCoculture TechniquesRegenerative MedicineHernia, UmbilicalGene ExpressionGreen Fluorescent ProteinsRNA, MessengerBiological MarkersBone Morphogenetic Protein 4ImmunohistochemistryHematopoiesisSkin, ArtificialSkin DiseasesFetal Stem CellsNeuronsGerm CellsMyocytes, CardiacMice, SCIDModels, BiologicalBase SequenceEpigenesis, GeneticCulture Media, ConditionedEmbryonic DevelopmentRegenerationPhenotypeSkin PigmentationKaryotypingActivinsCell DedifferentiationMice, TransgenicNeoplastic Stem CellsTissue Engineering