| abstract |
A class of new IgG1 monoclonal antibodies, directed to an epitope on human urokinase, which selectively bind to high molecualr weight urokinase (54,000), or a single-chain precursor thereof, without binding to low molecular weight urokinase (33,000) have an affinity constant for urokinase which is suitable for use in an immono-adsorption-based purification system and does not impair the enzymatic activity of urokinase. This antibody is also useful in immunoassays. |