Polyvinyl AlcoholPolyvinyl ChloridePolyvinylsAlcohol DrinkingSurgical SpongesWaterGelatin Sponge, AbsorbableEmbolization, TherapeuticPhenylmercury CompoundsEnbucrilateAlcoholsEthiodized OilFixativesForeign-Body ReactionOphthalmic SolutionsParticle SizeChemoembolization, TherapeuticDrug CompoundingPreservatives, PharmaceuticalWater Supply