Research Article

Encapsulation of Nicardipine Hydrochloride and Release from Biodegradable Poly(D,L-lactic-co-glycolic acid) Microparticles by Double Emulsion Process: Effect of Emulsion Stability and Different Parameters on Drug Entrapment

Figure 15

Scanning electron microphotographs illustrating morphology of the PLGA MPs before in vitro release (a) and after in vitro release (b); (magnification 3,500x).
(a)
(b)