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Drug/siRNA loading and release for different nanoparticles. (a) Entrapment efficiency of GEF and PTX; (b) Conjugation efficiency of siRNA; (c) Drug content during the storage in aqueous solution under physiological pH at 4 °C; (d) siRNA content during the storage in aqueous solution under physiological pH at 4 °C; (e) Drug release in aqueous solution under physiological pH and 37 °C. Means ± SD are shown. * p < 0.05 when compared with day 0.
