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  Indian J Med Microbiol
 

Figure 10: Scanning electron microscope images of the internal structure of phantoms with different w/v agar concentrations, (a) 2%, (b) 4%, and (c) 6%

Figure 10: Scanning electron microscope images of the internal structure of phantoms with different w/v agar concentrations, (a) 2%, (b) 4%, and (c) 6%