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. 2014 Jan 31;9(4):621–633. doi: 10.4161/epi.27956

graphic file with name epi-9-621-g8.jpg

Figure 8. Immunohistochemical analysis showing the correlation between hMLH1 promoter methylation and MLH1 protein expression. (A) Unmethylated sample showing positive MLH1 nuclear staining (nuclei of brown color). (B) Methylated sample showing lack of MLH1 nuclear staining (absence of brown color in the nuclei).