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A sensitive method for detecting cells coated with antibodies with human monoclonal rheumatoid factor produced in vitro

, : A sensitive method for detecting cells coated with antibodies with human monoclonal rheumatoid factor produced in vitro. Journal of Immunological Methods 54(3): 273-280

A human monoclonal rheumatoid factor (RF) produced in vitro by an Epstein-Barr virus immortalized cell line has been used to detect and quantitate antibodies specifically bound to cells. The RF is purified from cell culture supernatant by a simple procedure and then radiolabeled. In this assay, the binding of 125I-labeled RF to cells coated with specific antibodies is determined. This RF method detects very low titers of antibodies directed against specific cellular antigens and also minorities of antibody coated tumor cells in mixtures with identical non-coated cells. The advantages of this unique human monoclonal antibody are discussed.


PMID: 6294184

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