Figure 5From: Biscarbamate cross-linked low molecular weight Polyethylenimine polycation as an efficient intra-cellular delivery cargo for cancer therapy Cytotoxicity of PEI-Bu siRNA nanoparticles in different cell lines. (a) Hela (b) HepG2 (c) CT26 (d) HL7702 (e) SMMC-7721 at N/P ratio of 3.84, 7.67, 23.01, 38.35, 76.7, 115.05, 153.4 by using normal group as 100%. (n = 6, data represent mean ± SD).Back to article page