Application Notes: This Human Platelet-Derived Growth Factor AA (PDGF-AA) ELISA Kit employs a two-site sandwich ELISA to quantitate PDGF-AA in samples. An antibody specific for PDGF-AA has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyPDGF-AA present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for PDGF-AA is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of PDGF-AA bound in the initial step. The color development is stopped and the intensity of the color is measured
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