Ethyl Cellulose Microparticles Containing Metformin HCl by Emulsification-Solvent Evaporation Technique: Effect of Formulation Variables

<table>Scanning electron micrographs of various ethyl cellulose microparticles containing metformin HCl: F1 (a), F3 (b), F4 (c), F5 (d), and F7 (e).</table>

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Figure 1

Figure 1: Ethyl Cellulose Microparticles Containing Metformin HCl by Emulsification-Solvent Evaporation Technique: Effect of Formulation Variables 