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  Indian J Med Microbiol
 

Figure 1: Immunohistochemical staining of colorectal cancer with MMR markers. Magnification x20. (A) Negative immunohistochemical staining of colorectal cancer with MLH1. Lymphocytes serve as internal positive control. (B) Positive staining with MLH1. (C) Negative staining with MSH2. (D) Positive staining with MLH1

Figure 1: Immunohistochemical staining of colorectal cancer with MMR markers. Magnification x20. (A) Negative immunohistochemical staining of colorectal cancer with MLH1. Lymphocytes serve as internal positive control. (B) Positive staining with MLH1. (C) Negative staining with MSH2. (D) Positive staining with MLH1