Serial observations on an orthotopic gastric cancer model constructed using improved implantation technique

Figure 2 Histopathologic structure of SGC-7901 tumors by HE staining. A: Tumor cells showed nuclear polymorphism, nuclear hyperchromatism, and much mucus in the cytoplasm (× 200); B: The primary tumor destroyed muscularis mucosae (arrows) (× 100); C: The lymph nodes were infiltrated by metastatic tumor (arrows) (× 100); D: Metastases (arrows) infiltrated into the liver (× 200); E: Metastatic tumor (arrows) invaded the kidney (× 100); F: Tumor (arrows) metastasized to the lung and surrounded bronchia or bronchiole (× 40); G: Cast-off tumor cells were detected in ascites (× 200).