Research Article

Preparation of Polysaccharide-Based Microspheres by a Water-in-Oil Emulsion Solvent Diffusion Method for Drug Carriers

Figure 4

SEM images of drug-loaded microspheres of (a) 15 kDa chitosan, (b) 100 kDa chitosan, (c) potato starch, and (d) alginate. Bars = 20  m for (a) and (c), and 50  m for (b) and (d).
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(a)
761870.fig.004b
(b)
761870.fig.004c
(c)
761870.fig.004d
(d)