SEARCH Articles Figures Tables Biodegradable polymer drug delivery systems Development of Various Biodegradable Polymer Systems for Drug Delivery Drug delivery system cationic polymers Drug delivery systems actuated polymers Drug delivery systems polymer implants Drug delivery systems polymer spheres Drug delivery systems thermoresponsive polymer system Drug delivery systems, polymer-based Drug delivery/release systems, polymers Drug-delivery systems, polymer dispersions Interpenetrating polymer networks drug delivery systems Macromolecular drugs polymer-controlled drug-delivery system Natural Polymers as Drug Delivery Systems Polymer drugs Polymer matrix diffusion-controlled drug delivery systems Polymer membrane permeation-controlled drug delivery systems Polymeric drug delivery systems biodegradable polymers Stimuli-sensitive polymers for drug delivery and diagnostic systems interacting with biosurfaces