Organ TransplantationTransplantsTransplantationKidney TransplantationImmunosuppressive AgentsImmunocompromised HostGraft RejectionHeart TransplantationTissue and Organ ProcurementLung TransplantationTissue DonorsTransplantation ImmunologyCytomegalovirus InfectionsImmunosuppressionGraft SurvivalLymphoproliferative DisordersTransplantation, HomologousPostoperative ComplicationsLiver TransplantationGanciclovirOpportunistic InfectionsFacial TransplantationCytomegalovirusBrain DeathTacrolimusSkin NeoplasmsCyclosporineTime FactorsTransplantation ToleranceMycophenolic AcidEyebrowsPancreas TransplantationTreatment OutcomeRetrospective StudiesCryptococcosisKeratosis, ActinicMycosesZygomycosisHeart-Lung TransplantationRisk FactorsWaiting ListsLiving DonorsAntiviral AgentsMarital TherapyAntifungal AgentsBone Marrow TransplantationCadaverSeromaAcitretinDeathCalcineurinIncidenceSunscreening AgentsHerpesvirus 4, HumanHistocompatibility TestingCohort StudiesEpstein-Barr Virus InfectionsFatal OutcomeAspergillosisHerpesvirus 7, HumanHematopoietic Stem Cell TransplantationFollow-Up StudiesCoccidioidomycosisPennsylvaniaUnited StatesProspective StudiesHerpesvirus 6, HumanHerpesviridae InfectionsSunlightImmunocompetencePolymerase Chain ReactionHLA AntigensCarcinoma, Squamous CellMicrosporidiosisSirolimusImmune ToleranceKidneySurvival RateLiver DiseasesTumor Virus InfectionsViral Matrix ProteinsDNA, ViralT-LymphocytesRegistriesViral LoadViremiaFetal Tissue TransplantationCase-Control StudiesMultiple Organ FailurePrognosisAntibodies, ViralOrgan SizeKidney Failure, ChronicImmune SystemLiver FailureDrug Therapy, CombinationSarcoma, KaposiGraft vs Host DiseaseMice, Inbred C57BLOrgan Specificity