Umbilical CordCalcium PhosphatesBone CementsTissue ScaffoldsStem CellsFetal BloodHematopoietic Stem CellsUmbilical VeinsUmbilical ArteriesStem Cell TransplantationCord Blood Stem Cell TransplantationEmbryonic Stem CellsCell DifferentiationAdult Stem CellsSpinal CordPluripotent Stem CellsMesenchymal Stromal CellsHematopoietic Stem Cell TransplantationStem Cell NicheCells, CulturedCell LineageMesenchymal Stem Cell TransplantationMultipotent Stem CellsNeural Stem CellsInduced Pluripotent Stem CellsSpinal Cord InjuriesCell ProliferationPregnancyStem Cell FactorHernia, UmbilicalAntigens, CD34Neoplastic Stem CellsCell Culture TechniquesFlow CytometryCell SeparationBone Marrow CellsUrachal CystRegenerationStem Cell ResearchInfant, NewbornSignal TransductionBlood BanksMice, Inbred C57BLFetal Stem CellsCell LineAntigens, CDWharton JellyHematopoiesisCell DivisionColony-Forming Units AssayMice, SCID