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Confocal microscopy images of cochlear organotypic cultures incubated with targeted GNPs (A), untargeted GNPs (B). Fluorescent GNPs (0.25 mg/ml) were added to cochlear organotypic cultures and the samples incubated for 24 hours to allow the nanoparticles to bind to the cells. The images clearly indicate that the targeted GNPs were binding specifically to the outer hair cells.
