Research Article

Interleukin-18 Is a Prognostic Marker and Plays a Tumor Suppressive Role in Colon Cancer

Figure 2

Immunohistochemical staining of IL-18, Ki-67, and cleaved caspase-3 expression in colon cancer. The expression of IL-18 (a–c), Ki-67 (d–f), and cleaved caspase-3 (g–i) in colon cancer tissues and adjacent noncancerous tissues was examined by immunohistochemical staining. Original magnification ×200 (scale bars =100 μm).