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In vitro dialysis release study of BH from formulations: (a) BH solution, (b) BH-CS NPs, (c) BH-Mt/CS NPs, and (d) BH-Mt. The cumulative drug release (%) is plotted against time (h).
Abbreviations: BH, betaxolol hydrochloride; CS, chitosan; Mt, montmorillonite; NPs, nanoparticles.
