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Efflux pump inhibition studies of Rho-123 across rat intestinal mucosa. Effect of uncoated liposomes (△) and liposomes coated with the thiolated chitosans CS-TGA77 (●), CS-TGA150 (■), the S-protected chitosan CS-TGA150-MNA (♦) in comparison with the Rho-123 control at 4 °C (+) and 37 °C (×). Indicated values are the means ± SD of at least three experiments.
