Figure 2From: Primary pulmonary mucoepidermoid carcinoma: an analysis of 21 casesRepresentative images of immunohistochemistry staining. (A) Positive EGFR expression, 100×; (B) positive EGFR expression, 400×; (C) false-positive HER2 expression because only cytoplasmic staining was observed, 100×; (D) false-positive HER2 expression because only cytoplasmic staining was observed, 400×.Back to article page