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EGFR staining of 10 RDEB-related SCCs is positive in all tumors, although there is a notable variability among different tumors. a Ten primary RDEB-related cSCCs stained for EGFR and keratin 14. RDEB cSCCs are generally well differentiated and maintain keratin 14 expression [11]. b Quantification of the mean EGFR staining in tumor sections after normalization to keratin 14 staining in adjacent sections. The data are expressed as percentage of EGFR / keratin 14 ratio in control skin
