MicrospheresPolyglycolic AcidDelayed-Action PreparationsParticle SizeDrug CarriersDrug CompoundingLactic AcidPolymersChitosanChemistry, PharmaceuticalDrug Delivery SystemsHolmiumMicroscopy, Electron, ScanningTechnology, PharmaceuticalGelatinHexuronic AcidsGlucuronic AcidPolyvinyl AlcoholPolystyrenesYttrium RadioisotopesCapsulesAlginatesBiocompatible MaterialsRegional Blood FlowScandiumCoronary CirculationDogsPolymethacrylic AcidsExcipientsCerium RadioisotopesSurface PropertiesTechnetium Tc 99m Aggregated AlbuminEmulsionsRadioisotopesAbsorbable ImplantsPolyglactin 910PorosityStrontium RadioisotopesIridoid GlycosidesSolubilityPolyestersAcrylic ResinsArteriovenous AnastomosisHydrogelSuspensionsBiodegradation, EnvironmentalHepatic ArteryAcrylatesSerum Albumin, BovineMagneticsHemodynamicsEmbolization, TherapeuticTin RadioisotopesGlassInjectionsRabbitsTablets, Enteric-CoatedPulmonary CirculationHydrogelsCollateral CirculationSpectroscopy, Fourier Transform InfraredMethylcelluloseOilsInjections, Intra-ArterialPancreatinStaphylococcal ToxoidCerium IsotopesGlycolatesDurapatiteDiffusionPolyethylene Glycols