Figure 2From: Alterations in epidermal growth factor receptors 1 and 2 in esophageal squamous cell carcinomas Expression of EGFR in ESCC by immunohistochemistry. (A) Representative figure of a EGFR positive staining case in ESCC, and (B) its corresponding negative control. (C) Representative figure of a EGFR negative case in ESCC, and (D) its corresponding negative control.Back to article page