Figure 4From: Biscarbamate cross-linked low molecular weight Polyethylenimine polycation as an efficient intra-cellular delivery cargo for cancer therapy Silencing efficiency of PEI-Bu/siRNA polyplexes in SMMC-7721 cell. SMMC-7721 cell was stably expressing Luciferase gene, the polyplex was formed at N/P ratio of 3.84, 7.67, 23.01, 38.35, 76.7, 115.05, 153.4, saline was used as control. The result was expressed as mean ± SD.Back to article page