Photomicrographs: Representative Photomicrographs of Sections Stained for HER-2/neu Protein. (a) Study Case no: 66: Diffuse Pattern of Gastric Adenocarcinoma. HER-2/neu IHC Stain; X63; Negative (0) Score. (b) Study Case no: 2: An intestinal type of Gastric Adenocarcinoma.HER-2?neu IHC Stain; X63; Negative(1+) Score. (c) Study Case no: 50: An Intestinal Type Gastric Adenocarcinoma. HER-2/neu IHC Stain; X63 magnification; Negative (1+) Score . (d) Study Case no: 11: A Poorly Differentiated Intestinal type Gastric Adenocarcinoma. HER-2/neu IHC; X63; Equivocal (2+) Score. (e) Study Case no: 23: An intestinal type Gastric Adenocarcinoma. HER-2/neu IHC; X63; Positive (3+) Score.(f) Study Case no: 1: A diffuse Type Gastric Adenocarcinoma. HER-2/neu IHC stain; X63; Positive (3+) Score. (g) Positive Control HER-2/neu IHC Stain. (h) Positive Control HER-2/neu IHC Stain.