Fig. 3.
Group 1 with HER-2+ (A) and EGFR+ (B), group 2 with EGFR+ (C) and CK5/6- (D), and group 3 with EGFR+ (E) and CK5/6+ (F). HER-2, human epidermal growth factor receptor; EGFR, epidermal growth factor receptor; CK, cytokeratin.
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