Surface Modification of Gelatin Nanoparticles with Polyethylenimine as Gene Vector

Figure 2

Influence of pH environment on the particle size and ζ potential. (a) shows the ζ potential change and (b) shows the particle size change for gelatin nanoparticles (●) and gelatin-PEI nanoparticles (▲), 𝑛=3.

(a)

(b)