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  Indian J Med Microbiol
 

Figure 5 :Scanning electron microphotographs of appearance of metformin microballoons (a) Metformin 0.5 g, (b) Metformin 0.2 g, (c) Metformin 0.5 g and (d) Metformin 1.0 g

Figure 5 :Scanning electron microphotographs of appearance of metformin microballoons (a) Metformin 0.5 g, (b) Metformin 0.2 g, (c) Metformin 0.5 g and (d) Metformin 1.0 g