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Schematic illustration of electrically triggered drug delivery from electrospun poly(lactic acid)/graphene oxide/quercetin fibrous scaffolds: (a) The idea, fabrication, and methods; (b) cumulative release graph of the drug-loaded microfiber scaffolds without electric stimulus; and cumulative release graphs under electric stimulus at two different frequency values: 10 Hz (c) and 50 Hz (d). Reprinted with permission from Ref. [263] (copyright 2021, Croitoru).
