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(A) Preparation of N-[(2-hydroxy-3-trimethylammonium)propyl]chitosan chloride (HTCC)/silver (Ag)/graphene oxide (GO)/voriconazole (Vor) delivery system. (B) Schematic illustration of voriconazole-loaded contact lens and controlled drug release. Reprinted with permission from ref. [285]. Copyright, 2016, American Chemical Society.
