Intestine, SmallIntestinesKidney TransplantationIntestine, LargeTransplantsGraft RejectionGraft SurvivalImmunosuppressive AgentsTransplantation, HomologousHeart TransplantationTransplantationTissue DonorsLung TransplantationIntestinal MucosaJejunumTissue and Organ ProcurementBone Marrow TransplantationIntestinal AbsorptionTime FactorsTacrolimusCyclosporineIleumLiving DonorsWaiting ListsPostoperative ComplicationsTreatment OutcomeImmunosuppressionRetrospective StudiesHematopoietic Stem Cell TransplantationFetal Tissue TransplantationCytomegalovirus InfectionsMycophenolic AcidHistocompatibility TestingDuodenumTransplantation ImmunologyCadaverImmunocompromised HostKidney Failure, ChronicLiver FailureGraft vs Host DiseaseKidneyColonHeart-Lung TransplantationBrain Tissue TransplantationIntestinal DiseasesTransplantation, AutologousIntestinal NeoplasmsFollow-Up StudiesRisk FactorsTransplantation, HeterotopicLiverMicrovilliBronchiolitis ObliteransHistocompatibilityBiopsyDigestive SystemEnterocytesMice, Inbred C57BLTransplantation ToleranceOpportunistic InfectionsCytomegalovirusTransplantation ConditioningBK VirusRecurrenceSurvival AnalysisSurvival RateCecumHLA AntigensGanciclovirTransplantation, IsogeneicAntilymphocyte SerumIsoantibodiesPolyomavirus InfectionsRNA, MessengerSwineLiver DiseasesProspective StudiesLymphoproliferative DisordersEnd Stage Liver DiseaseHematologic NeoplasmsKidney DiseasesCreatinineIncidenceFatal OutcomeIslets of Langerhans TransplantationAcute DiseasePostoperative PeriodTissue DistributionGerm-Free LifeMycosesWhole-Body IrradiationImmunohistochemistryGastrointestinal TractGastrointestinal MotilityMolecular Sequence DataStomachAntiviral AgentsPolymerase Chain ReactionOrgan SpecificityMice, Inbred BALB C