Fig. 4From: Muir–Torre syndrome: sebaceous carcinoma concurrent with colon cancer in a kidney transplant recipient; a case reportImmunohistochemical staining for DNA mismatch repair-related proteins (MMR proteins MSH2, MSH6, MLH1, and PMS2). The sebaceous carcinoma (white arrow) lacked MSH6 (a) and MSH2 (b) MMR proteins, but showed positive staining for PMS2 (c) and MLH1 (d). Normal epidermis and sebocytes (black arrow) expressed all four MMR proteinsBack to article page