536291.fig.002a
(a)
536291.fig.002b
(b)
536291.fig.002c
(c)
536291.fig.002d
(d)
Figure 2: Particle size of unloaded (a) and BSA-loaded (b) and zeta potential of unloaded (c) and BSA-loaded (d) CS/DS nanoparticles at various concentrations of DS when incubated in FBS (CS 0.075% w/v, BSA 1 mg/mL, mean ± S.D, ). *Significantly different from before incubation in serum.