Organ TransplantationChimerismTransplantsTransplantation ChimeraTransplantationKidney TransplantationImmunosuppressive AgentsGraft RejectionHeart TransplantationTransplantation, HomologousImmunocompromised HostTissue DonorsGraft SurvivalLung TransplantationTransplantation ToleranceTissue and Organ ProcurementTransplantation ImmunologyBone Marrow TransplantationImmunosuppressionCytomegalovirus InfectionsChimeraLymphoproliferative DisordersLiver TransplantationPostoperative ComplicationsGanciclovirOpportunistic InfectionsHematopoietic Stem Cell TransplantationTacrolimusCyclosporineFacial TransplantationTransplantation ConditioningCytomegalovirusMycophenolic AcidBrain DeathTreatment OutcomeHistocompatibility TestingSkin NeoplasmsTime FactorsRetrospective StudiesEyebrowsPancreas TransplantationImmune ToleranceCryptococcosisGraft vs Host DiseaseKeratosis, ActinicSkin TransplantationMycosesZygomycosisHeart-Lung TransplantationLiving DonorsWaiting ListsWhole-Body IrradiationAntiviral AgentsMarital TherapyAntifungal AgentsCadaverT-LymphocytesHost vs Graft ReactionSeromaRisk FactorsPolymerase Chain ReactionAcitretinRadiation ChimeraHLA AntigensCalcineurinSunscreening AgentsDeathHerpesvirus 4, HumanEpstein-Barr Virus InfectionsFollow-Up StudiesFatal OutcomeAspergillosisLymphocyte TransfusionHerpesvirus 7, HumanHematologic NeoplasmsIncidenceHistocompatibilityCoccidioidomycosisBusulfanLymphocyte DepletionLeukocyte TransfusionMice, Inbred C57BLProspective StudiesHerpesvirus 6, HumanCohort StudiesPennsylvaniaHerpesviridae InfectionsSirolimusSurvival RateCord Blood Stem Cell TransplantationImmunocompetenceMice, Inbred BALB CKidneySunlightMicrosporidiosisImmune SystemCarcinoma, Squamous CellVidarabineLiver DiseasesAntilymphocyte Serum