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  Indian J Med Microbiol
 

Figure 2 :Low power view (10x) � blue stained verti cal bands of collagen fibers perforating the channel and extending to the surface (Masson�s trichrome stain)

Figure 2 :Low power view (10x)  blue stained verti cal bands of collagen fibers perforating the channel and extending to the surface (Massons trichrome stain)