Fig. 1From: 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 MSI-H. Tumor cells showing A: intact nuclear expression of MLH1; B: loss of nuclear expression of PMS2; C: intact nuclear expression of MSH2; and D: loss of MSH6 nuclear expression (× 200)Back to article page