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. 2012 Apr 11;7(4):e34711. doi: 10.1371/journal.pone.0034711

Figure 5. Transfection efficiencies and cytotoxicities of chitosan, Chi-g-bPEI2.7% copolymer and bPEIs in primary cells.

Figure 5

Transfection efficiencies (A) and cytotoxicities (B) in bovine articular chondrocytes. Chitosan, Chi-g-bPEI2.7% copolymer and 2 kDa branched polyethylenimine (bPEI) were used at nitrogen (N) to plasmid DNA phosphate (P) ratio (N/P) 30 and 25 kDa bPEI was administered at N/P 10 according to the existing literature. Results are expressed as mean ± standard deviation (n≥5) (*, p<0.05 vs. Chi-g-bPEI2.7%; #, p<0.05 vs. 2 kDa bPEI).