Figure 5: Particle size distribution curves of nanoparticles (A) PLGA-PEGFOL nanoparticles prepared by O/W emulsion method, (B) PLGA-PEG-FOL nanoparticles prepared by W/O/W double emulsion solvent evaporation method, (C) PLGA-PEG-FOL nanoparticles prepared by dialysis method.