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FTIR spectra of, from the top, sodium deoxycholate as purchased powder (SD), chitosan as purchased powder (CS), drug-free complex containing dry NPs of CS–SD at a ratio of 1:3, as purchased prednisolone acetate (PA), F12 formulation components as a physical mix and finally the F12 NPs formulation.
Abbreviations: SD, sodium deoxycholate; CS, chitosan; PA, prednisolone acetate; NPs, nanoparticles.
