Characterization and Compatibility Studies of Different Rate Retardant Polymer Loaded Microspheres by Solvent Evaporation Technique: In Vitro-In Vivo Study of Vildagliptin as a Model Drug

Figure 7

SEM studies of Vildagliptin microspheres of formulation VF13 prepared by emulsion solvent evaporation technique with different magnification (a) at ×30 SEI, (b) at ×60 SEI, and (c) at ×300 SEI, respectively.

(a)

(b)

(c)