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预期应用
ELISA法定量测定大鼠血清、血浆、细胞培养物上清或其它相关液体中Fas含量。
实验原理
本试剂盒应用双抗体夹心酶标免疫分析法测定标本中Fas水平。用纯化的抗体包被微孔板，制成固相抗体，往包被单抗的微孔中依次加入Fas抗原、生物素化的抗大鼠Fas抗体、HRP标记的亲和素，经过彻底洗涤后用底物TMB显色。TMB在过氧化物酶的催化下转化成蓝色，并在酸的作用下转化成最终的黄色。颜色的深浅和样品中的Fas呈正相关。用酶标仪在450nm波长下测定吸光度（OD值），计算样品浓度。
Intended use
This immunoassay kit allows for the specific measurement of rat Fas concentrations in cell culture supernates, serum, and plasma.
Introduction
Fas (APO-1 or CD95) is a cell-surface receptor that transduces apoptotic signals from Fas ligand (FasL). Fas and Fas Ligand (FasL) belong to the TNF superfamily and are type I and type II transmembrane proteins, respectively. Fas and FasL have been observed as soluble molecules in
addition to their membraneassociated forms. Fas is expressed to a large extent on activated T and B lymphocytes, and on malignant lymphoid cells.
Test principle
This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal
antibody specific for Fas has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any Fas present is bound by the immobilized antibody. An
enzyme-linked monoclonal antibody specific for Fas is added to the wells. Following a wash to remove any unbound antibody-enzyme reagent, a substrate solution is added to the wells
and color develops in proportion to the amount of Fas bound in the initial step. The color
development is stopped and the intensity of the color is measured. | 
