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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).
