PLAU and malignant colon neoplasm: Inhibits cell migration by decreasing the expression of urokinase plasminogen activator (u‐PA), tissue‐type plasminogen activator (t‐PA) and matrix metalloproteinase 9 (MMP‐9) as well as matrix metalloproteinase 2/9 (MMP‐2/9) activity in colon cancer cells.