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Fabrication process and morphology characterization of the Christmas tree-shaped MN patch. (a) Schematic flow gram of the fabrication process of the FOLFIRINOX-loaded Christmas tree-shaped MN patch. (b, c) Optical microscopic images of the monolayer MN patch (b) and Christmas tree-shaped MN patch (c). (e–g) Statistical quantification of the height of the top layer (e), interlayer spacing (f), and total two layers (g). Scale bars are 500 μm in (b, c) and 1 cm in (d).
