Table 1.

Effect of DSPE-PEG concentration on the behavior of liposomes on the surface.

DSPE-PEG concentration (mg/mL)	−ΔD/Δf ratio
0.01	4.03±3.53
0.02	5.71±1.13
0.03	1.85±0.15
0.04	6.16±2.58
0.05	5.20±0.61
0.06	3.38±1.20