1. Jones, P. A. and Werb, Z. (1980) Degradation of connective tissue matrices by macrophages: II. Influence of matrix composition on proteolysis of glycoproteins, elastin, and collagen by macrophages in culture. J. Exp. Med. 152, 1527–1536.
2. Liotta, L.A., Goldfarb, R.H., Brundage, R., Siegal, G.P., Terranova, V. and Garbisa, S. (1981) Effect of plasminogen activator (urokinase), plasmin, and thrombin on glycoprotein and collagenous components of basement membrane. Cancer Res. 41, 4629–4636.
3. Blasi, F., Vassalli, J.D. and Danø, K. (1987) Urokinase-type plasminogen activator: proenzyme, receptor, and inhibitors. J. Cell Biol. 104, 801–804.
4. Ellis, V., Scully, M. F. and Kakkar, V. V. (1989) Plasminogen activation initiated by single-chain urokinase-type plasminogen activator. Potentiation by U937 monocytes. J. Biol. Chem. 264, 2185–2188.
5. Ossowski, L. and Reich, E. (1983) Antibodies to plasminogen activator inhibit human tumor metastasis. Cell 35, 611–619.