Tissue ScaffoldsBiodegradable PlasticsTissue EngineeringRegenerationBiocompatible MaterialsPorosityPolyurethanesPolyestersMaterials TestingNerve RegenerationLiver RegenerationBone RegenerationGuided Tissue RegenerationNanofibersAbsorbable ImplantsPolyglycolic AcidPlanariansHepatectomyAxonsMicroscopy, Electron, ScanningCell ProliferationBone SubstitutesStem CellsCell DifferentiationDecanoatesPolymersSalamandridaeAmbystoma mexicanumOsteogenesisWound HealingExtremitiesDurapatiteNerve CrushMesenchymal Stromal CellsSilkCells, CulturedImplants, ExperimentalBiomimetic MaterialsCalcium PhosphatesNotophthalmus viridescensAnimal FinsChitosanRegenerative MedicineHydrogelsSpinal Cord RegenerationSatellite Cells, Skeletal MuscleTailHydrogelSciatic NerveNanostructuresExtracellular MatrixSignal TransductionLactic AcidGelatinTime Factors