Acellular DermisTissue TransplantationBrain Tissue TransplantationClone CellsKidney TransplantationTransplantsGraft RejectionGraft SurvivalImmunosuppressive AgentsHeart TransplantationTransplantation, HomologousTransplantationTissue DonorsLung TransplantationTissue and Organ ProcurementBone Marrow TransplantationCloning, MolecularCyclosporineMolecular Sequence DataTacrolimusBase SequenceLiving DonorsWaiting ListsTime FactorsTreatment OutcomePostoperative ComplicationsImmunosuppressionHematopoietic Stem Cell TransplantationRetrospective StudiesCytomegalovirus InfectionsFetal Tissue TransplantationAmino Acid SequenceHistocompatibility TestingMycophenolic AcidTransplantation ImmunologyCadaverImmunocompromised HostKidney Failure, ChronicLiver FailureGraft vs Host DiseaseHeart-Lung TransplantationTransplantation, AutologousPolymerase Chain ReactionRisk FactorsFollow-Up StudiesBronchiolitis ObliteransDNA, Complementary