Figure 1

Immunohistochemical staining for HER-2/neu expression in tumor samples from patients with gastric cancer. (A) Membrane staining in normal gastric epithelium for HER-2/neu (0+). (B) Faint membrane staining in >10% tumor cells (1+). (C) Moderate complete membrane staining in >10% tumor cells (2+). (D) Strong complete membranes staining in >10% tumor cells (3+). (H&E; original magnification, ×4, ×40).