PVA microporous hydrospheres

Definition / meaning of PVA microporous hydrospheres

An embolic material composed of microspheres of polyvinyl alcohol (PVA) polymers. These water-soluble, compressible microspheres may be used to encapsulate various therapeutic agents; drug-loaded microspheres can then be used as a drug delivery vehicle during embolization of tumor vasculature.

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The Web site of the National Cancer Institute (http://www.cancer.gov/)

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