Fig. 4From: Current applications of molecular pathology in colorectal carcinomaImmunohistochemical stains for MLH1 and MSH2. a Loss of nuclear staining for MLH1 in the cells of a colorectal adenocarcinoma. The tumor also showed PMS2 loss. b Intact nuclear expression of MSH2 in the same tumor. It also showed intact MSH6 expressionBack to article page