Figure 1.EGFR representative pictures by immunostaining in ESCC. Scale bar represents 50 μm. (A) Staining score 0 negative pattern for EGFR; (B) Staining score 2 negative pattern for EGFR; (C) Staining score 12 negative pattern for EGFR. Abbreviations: EGFR: Epidermal Growth Factor Receptor; ESCC: Esophageal Squamous Cell Carcinoma.
