Organ TransplantationTissue DonorsKidney TransplantationHeart TransplantationLiver TransplantationGraft RejectionGraft SurvivalTransplantsTransplantation, HomologousTransplantationTissue and Organ ProcurementLung TransplantationBone Marrow TransplantationImmunosuppressive AgentsLiving DonorsImmunosuppressionTacrolimusCyclosporineTime FactorsPostoperative ComplicationsTreatment OutcomeCytomegalovirus InfectionsRetrospective StudiesHematopoietic Stem Cell TransplantationTransplantation ImmunologyHistocompatibility TestingCadaverWaiting ListsMycophenolic AcidGraft vs Host DiseaseImmunocompromised HostLiver FailureHeart-Lung TransplantationKidney Failure, ChronicFetal Tissue TransplantationRisk FactorsTransplantation ToleranceIsoantibodiesCytomegalovirusBronchiolitis ObliteransHistocompatibilityFollow-Up StudiesKidneyTransplantation, HeterotopicMice, Inbred C57BLMultiple Organ FailureOpportunistic InfectionsBK VirusGanciclovirTransplantation, IsogeneicOrgan SizeAntilymphocyte SerumLymphoproliferative DisordersHLA AntigensTransplantation ChimeraSurvival RateBrain DeathTransplantation ConditioningSurvival AnalysisTissue and Organ HarvestingTransplantation, AutologousIslets of Langerhans TransplantationBiopsyProspective StudiesRecurrencePolyomavirus InfectionsT-LymphocytesSkin TransplantationOrgan SpecificityLiver DiseasesIncidenceSpleenMycosesCreatinineHematologic NeoplasmsOrgan of CortiAcute DiseasePancreas TransplantationKidney DiseasesMice, Inbred BALB CAntiviral AgentsLiverWhole-Body IrradiationPostoperative PeriodBrain Tissue TransplantationDirected Tissue DonationPrimary Graft DysfunctionEnd Stage Liver DiseaseFatal OutcomeCorneal TransplantationCohort StudiesRats, Inbred LewSirolimusDonor SelectionStem Cell TransplantationCyclosporinsImmune ToleranceBlood Group IncompatibilityInfectionPolymerase Chain Reaction