Figure 1.
Scanning electron microscopy of microparticles. (a) PLGA : A1 (85 : 15), (b) PLGA : A2 (85 : 15), (c) PLGA : A1 (75 : 25), (d) PLGA : A2 (75 : 25), (e) PLGA : A1 (50 : 50), and (f) PLGA : A2 (50 : 50).
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