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The local drug release effects of NIR irradiation on MNPs. The sections of the inflamed paw were examined at 1 h and 24 h after local administration of rhodamine solution and rhodamine-loaded MNPs without/with NIR irradiation. Sections were counterstained by DAPI (blue). Dotted lines indicate the boundaries of paws. c, connective tissue; ep, epidermis; sm, skeletal muscle. Original magnification × 100
