Plasminogen-activator inhibitor type 1 is a potent natural inhibitor of extracellular matrix degradation by fibrosarcoma and colon carcinoma cells - Cajot, J F; Bamat, J; Bergonzelli, G E; Kruithof, E KO; Medcalf, R L; Testuz, J; Sordat, B (Proc Natl Acad Sci USA, 1990)