Table 2.

The average size and zeta potential changes of CS/pDNA complexes formed at w/w ratio of 55 under different pH conditions.

Samples	pH	Average size (nm) w/w = 55	PDI	Zeta potential (mV)
	7.4	174.1 ± 3.1	0.272	9.72 ± 0.33
CS1/pDNA	6.5	244.3 ± 5.1*	0.187	7.77 ± 0.54*
	5.0	183.2 ± 5.7	0.279	7.38 ± 0.51*
	7.4	156.1 ± 5.3	0.321	6.18 ± 0.24
CS2/pDNA	6.5	153.1 ± 4.2	0.403	8.03 ± 0.27*
	5.0	144.6 ± 5.1	0.501	0.43 ± 0.10*
	7.4	185.6 ± 3.5	0.253	6.50 ± 0.41
CS3/pDNA	6.5	175.6 ± 4.7	0.424	8.00 ± 0.48
	5.0	163.5 ± 3.0	0.318	5.84 ± 0.26*

*P < 0.05. Data are shown as mean ± SD (n = 3).