Characterization of gastric cancer models from different cell lines orthotopically constructed using improved implantation techniques

Figure 4 Immunohistochemistry of primary tumor and metastasis in the SGC-7901 model using the self-potential method. Cytokeratin 20 (A: Stomach; B: Liver) and epithelial membrane antigen expression (C: Lymph node; D: Lung) shows as positive, characterized by the brown-yellow stain in the cytoplasm. Visualized by using DAB reagent; Magnification, × 100.