CD4 BioAssay ELISA Kit is an enzyme-linked immunosorbent sandwich assay for detection of human CD4.Kit Components:C2255-35A: Microtiter Plate, 1x96 wellsC2255-35B: Wash Buffer (10X), 1x50mlC2255-35C: Blocking/Diluent Buffer, 1x50mlC2255-35D: CD4 Standard, 1x500ulC2255-35E: CD4 Ab (HRP), 1x1 vialC2255-35F: TMB Substrate, 1x1 bottleC2255-35G: Stop Solution, 1x15mlStorage and Stability:Store C2255-35A and C2255-35D at -70°C. Store other components at 4°C. Stable for 3 months. For maximum recovery of product, centrifuge the original vials after thawing and prior to removing the cap.