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  Indian J Med Microbiol
 

Figure 1: (a) Root wrapped with a single layer of aluminum foil. (b) Root embedded in acrylic tube. (c) Root removed from the tube and the aluminum foil peeled off

Figure 1: (a) Root wrapped with a single layer of aluminum foil. (b) Root embedded in acrylic tube. (c) Root removed from the tube and the aluminum foil peeled off