Polyvinyl AlcoholPolyvinyl ChloridePolyvinylsPolymersAlcohol DrinkingSurgical SpongesGelatin Sponge, AbsorbableEmbolization, TherapeuticPhenylmercury CompoundsEnbucrilateEthiodized OilAlcoholsFixativesForeign-Body ReactionParticle SizeDrug CompoundingOphthalmic SolutionsChemoembolization, TherapeuticPreservatives, PharmaceuticalMicrospheresViscosityPovidone