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volved in tumor growth and metastasis. We assayed the components of the uPA system in homogenates of 64 primary epithelial ovarian tumors and 5 metastases and evaluated the association of these parameters to prognosis in the 51 malignant cases. The levels of uPA, PAI-2 and the uPA: PAI-I complex increased with progressive loss of histological differentiation (P-trend <0.001, <0.05 and <0.001). The
