Principle of Assay
Mouse IFN beta ELISA Kit (High Sensitivity) (A335144) is a 4 hour sandwich Enzyme-Linked Immunosorbent Assay (sELISA) designed for the in vitro quantitative determination of mouse IFN beta in serum, plasma, cell culture supernatant, cell or tissue lysate, and other biological fluids. A 96-well microtiter plate has been pre-coated with an antibody specific for IFN beta. Standards and samples are added to the wells, where IFN beta binds to the immobilized capture antibody. Following incubation, unbound components are removed by washing and a biotinylated detection antibody specific for IFN beta is added to the wells. The detection antibody binds the captured IFN beta to form an antibody-antigen-antibody sandwich complex. After further incubation and washing, HRP-Streptavidin conjugate is added to the wells. TMB substrate solution is then added to visualize the HRP enzymatic reaction. This produces a blue-coloured product that changes to yellow following addition of acidic stop solution. The intensity of the yellow colour is directly proportional to the amount of IFN beta captured in each well. The concentration of IFN beta is calculated by reading the absorbance at 450 nm and comparing the values with the standard curve.