Fig.3From: Comparison of standard mismatch repair deficiency and microsatellite instability tests in a large cancer seriesAn example of MSS colorectal cancer case with low level heterogenous loss of MLH1/PMS2. A. Heterogenous loss of MLH1 protein staining from the nuclei of tumor cells. B. Matching area. PMS2 protein positivity in tumor cells. Bar = 200 µm. C. Pentaplex analysis of the case where none of the 5 markers are aberrant. Tumor proportion: 70%Back to article page