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. Author manuscript; available in PMC: 2014 May 22.
Published in final edited form as: Pharm Res. 2011 Mar 9;28(7):1723–1732. doi: 10.1007/s11095-011-0408-7

Fig. 4.

Fig. 4

Gel retardation assay of complexation efficiency for siRNA at various P′/N ratios for N/P ratios of 4 and 8, respectively. Nanoparticles prepared at various conditions were incubated with PVSK for 1 and 5 h at 37°C at a molar ratio of sulfate groups in PVSK to phosphate groups in siRNA of 5.