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  Indian J Med Microbiol
 

Figure 1 Positive controls: (A) Colon − demonstrating immunohistochemical (IHC) expression of COX-2 (×100). (B) Skin − demonstrating IHC expression of type IV collagen (×100 magnification).

Figure 1 Positive controls: (A) Colon − demonstrating immunohistochemical (IHC) expression of COX-2 (×100). (B) Skin − demonstrating IHC expression of type IV collagen (×100 magnification).