Cord Blood Stem Cell TransplantationTransplantation, HomologousFetal BloodLiver TransplantationBone Marrow TransplantationHematopoietic Stem Cell TransplantationKidney TransplantationSpinal CordTransplantation ConditioningTransplantation, AutologousGraft vs Host DiseaseStem Cell TransplantationHeart TransplantationGraft SurvivalLung TransplantationTransplantation ChimeraTissue DonorsSpinal Cord InjuriesGraft RejectionTransplantation ImmunologyOrgan TransplantationIslets of Langerhans TransplantationTransplantation, IsogeneicHistocompatibility TestingHematologic NeoplasmsCell TransplantationImmunosuppressive AgentsTreatment OutcomePancreas TransplantationTransplantationUmbilical CordBlood BanksAntigens, CD34Hematopoietic Stem CellsHistocompatibilityTime FactorsSkin TransplantationPeripheral Blood Stem Cell TransplantationInfant, NewbornWhole-Body IrradiationImmunosuppressionRetrospective StudiesRecurrenceTransplantation, HeterotopicT-LymphocytesTransplantation ToleranceLiving DonorsLeukemiaIsoantigens