A sensitive and rapid enzyme-linked immunosorbent assay using monoclonal antibodies for simultaneous quantitation of free and IgA-complexed protein HC
A sensitive and rapid enzyme-linked immunosorbent assay for simultaneous quantitation of free and IgA-complexed human protein HC was developed with monoclonal murine antibodies. The total amount of protein HC (free plus IgA-complexed) was measured by a competitive procedure while the protein HC-IgA complex was quantitated by a sandwich enzyme immunoassay. The amount of free protein HC was then obt