Description
Aviva Systems Biology Tcf21 ELISA Kit (Mouse) (OKEH06595) is based on a competitive enzyme immunoassay technique. The microtiter well-plate in this kit has been pre-coated with an anti-Tcf21 antibody. Sample or standards are added to the wells along with a fixed quantity of biotinylated Tcf21 and incubated. The Tcf21 found in the sample or standards competes with the biotinylated Tcf21 for limited binding sites on the immobilized anti-Tcf21 antibody. Excess unbound biotinylated Tcf21 and sample or standard Tcf21 is washed from the plate. Avidin-HRP conjugate is added, incubated and washed. An enzymatic reaction is then produced through the addition of TMB substrate which is catalyzed by the immobilized HRP to generate a blue color product that changes to yellow after adding acidic stop solution. The density of yellow coloration is measured by reading the absorbance at 450 nm which is quantitatively proportional to the amount of biotinylated Tcf21 captured in the well and inversely proportional to the amount of Tcf21 which was contained in the sample or standard