Fig. 3From: Microsatellite instability screening in colorectal carcinoma: immunohistochemical analysis of MMR proteins in correlation with clinicopathological features and Ki-67 protein expressionImmunohistochemistry for mismatch repair proteins in patient with MSS. Tumor cells showing intact nuclear expression of A: MLH1; B: PMS2; C: MSH2; and D: MSH6 (× 200)Back to article page