Figure 1From: Matrix metalloproteinase-9 overexpression is closely related to poor prognosis in patients with colon cancerMatrix metalloproteinase-9 (MMP-9) expression in colon cancer tissues. A: Positive MMP-9 expression in colon cancer tissue. The expression of MMP-9 was detected in the cytoplasm by immunohistochemistry staining (×400, SP method). B: Negative MMP-9 expression in colon cancer tissue (×400, SP method).Back to article page