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Scanning electron microscopy micrographs (A) before drug release at 200 μm, (B) after drug release at 200 μm, (C) after drug release at 100 μm, (D) after drug release at 50 μm.
Notes: (A) Shows surface morphology of the polymeric films before the drug release, while (B–D) present surface morphology of polymeric patches after the drug release at different magnification powers.
