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首页> 外文期刊>journal of immunoassay >A Cocktail of Three Monoclonal Antibodies Significantly Increases the Sensitivity of an Enzyme Immunoassay for Human Granulocyte-Macrophage Colony-Stimulating Factor
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A Cocktail of Three Monoclonal Antibodies Significantly Increases the Sensitivity of an Enzyme Immunoassay for Human Granulocyte-Macrophage Colony-Stimulating Factor

机译：A Cocktail of Three Monoclonal Antibodies Significantly Increases the Sensitivity of an Enzyme Immunoassay for Human Granulocyte-Macrophage Colony-Stimulating Factor

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摘要

A sensitive and specific two-site ELISA was developed for human granulocyte—macrophage colony-stimulating factor (huGM-CSF) based on monoclonal antibodies (mAbs) which have been selected for high affinities and different epitope specificities. Using a cocktail of three mAbs, both for coating and, in their labeled form, for detection, a major increase in sensitivity was achieved (20-fold) compared to a two-site assay employing two different mAbs (one for coating and one for detection). The assay is as sensitive as the most sensitive biological assays. Recombinant mammalian cell expressed and natural huGM-CSF can be reliably detected down to 100 pg/ml (7 pmol/l). In contrast to conventional bioassays, the ELISA is highly specific for huGM-CSF and does not detect other human lymphokines. Results from quantification of recombinant and natural huGM-CSF in ELISA and bioassay correlate.

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