Tissue ScaffoldsBiodegradable PlasticsTissue EngineeringBiocompatible MaterialsPorosityOrgan SpecificityPolyurethanesPolyestersKidneyMaterials TestingLiverNanofibersPolyglycolic AcidTissue and Organ ProcurementOrgan TransplantationAbsorbable ImplantsDecanoatesMicroscopy, Electron, ScanningPolymersBone RegenerationGuided Tissue RegenerationSilkBiomimetic MaterialsDurapatiteBone SubstitutesMultiple Organ FailureOrgan SizeImplants, Experimental