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A. Optical microscopy of the 5-FU-loaded patch. Scale bar: 5 mm. B. Scanning electron microscopy (Left: Unloaded patch; Middle: 5-FU-loaded patch; Right: 5-FU-loaded patch after implantation in vivo for three weeks. C. Cumulative release profile of 5-FU loaded patch. D. Cytotoxicity of 5-FU-loaded patch in vitro. E. Patch-delivered 5-FU concentration in mouse pancreas tissue and blood serum.
