TABLE 2.

Effect of cationic polymers on NIH-3T3 ζ-potential

	Mean molecular mass (kDa)	ζ-Potential (mV)	% neutralization
Control	0	−21.73 ± 1.08	N/A
PLL 1–4 kDa (64 μg/ml)	2.5	−9.47 ± 0.76	56.4%
Polybrene (8 μg/ml)	3.6	−8.39 ± 0.992	61.4%
PLL 4–15 kDa (8 μg/ml)	9.5	−9.91 ± 1.76	54.4%
PLL 15–30 kDa (4 μg/ml)	22.5	−12.24 ± 2.66	43.7%
PLL 30–70 kDa (4 μg/ml)	50	−14.85 ± 2.56	31.7%
PLL 70–150 kDa (4 μg/ml)	110	−15.19 ± 2.23	30.1%
PLL 150–300 kDa (4 μg/ml)	225	−13.66 ± 2.3	37.1%
PLL >300 kDa (4 μg/ml)	300	−11.53 ± 2.84	46.9%