Transplantation ToleranceSkin TransplantationGraft SurvivalTransplantation ImmunologyTransplantation, HomologousImmune ToleranceLiver TransplantationHeart TransplantationGraft RejectionBone Marrow TransplantationKidney TransplantationTransplantation ChimeraHematopoietic Stem Cell TransplantationIslets of Langerhans TransplantationIsoantigensCD40 LigandTransplantation, HeterotopicDrug ToleranceGraft Enhancement, ImmunologicOrgan TransplantationInjections, IntralymphaticTransplantation, AutologousImmunosuppressionRadiation ChimeraTissue DonorsLung TransplantationMice, Inbred C57BLChimerismMice, Inbred BALB CImmunosuppressive AgentsGraft vs Host DiseaseT-Lymphocytes, RegulatoryMice, Inbred CBAStem Cell TransplantationT-LymphocytesTransplantation ConditioningLymphocyte Culture Test, MixedLymphocyte TransfusionMice, Inbred C3HLymphocyte DepletionRats, Inbred ACIChimeraClonal DeletionTime FactorsGraft Occlusion, VascularPancreas TransplantationTransplantationAdoptive TransferCell TransplantationThymectomyAntibodies, BlockingTreatment OutcomeThymus GlandCD4-Positive T-LymphocytesCostimulatory and Inhibitory T-Cell ReceptorsAntibodies, MonoclonalRats, Inbred LewGlucose Tolerance TestLiving DonorsIsoantibodiesTransplantation, IsogeneicReceptors, Interleukin-2Mice, TransgenicCD8-Positive T-LymphocytesImmunoconjugatesMice, KnockoutCTLA-4 AntigenT-Lymphocyte SubsetsAntigens, CD4H-2 AntigensInjections, IntraperitonealSpleenLymphocyte ActivationRetrospective StudiesCord Blood Stem Cell TransplantationPostoperative ComplicationsFetal Tissue TransplantationTissue and Organ ProcurementHeart-Lung TransplantationModels, ImmunologicalAntigens, CD40Histocompatibility TestingMice, Inbred StrainsAntigens, CD45Liver FailureAntigens, CD8Antigens, CD80Forkhead Transcription FactorsAntigens, DifferentiationPeripheral Blood Stem Cell TransplantationFollow-Up StudiesAntigens, CDFlow CytometryTransplantation, HeterologousTransplantsBlood Vessel ProsthesisInterleukin-2 Receptor alpha SubunitCadaverRecurrenceTissue Transplantation