Human IL-21 (Interleukin 21) ELISA Kit Packaging:96 wells The OD value is proportional

The OD value is proportional to the concentration of Human PAP

only those wells that contain Human TSPO

The OD value is proportional to the concentration of Human TLR4

Substrate solution is then added and color develops in proportion to the amount of Mouse PDHX

Human IL-21 (Interleukin 21) ELISA Kit Packaging:96 wells The OD value is proportionalThe Human (IL 21) Interleukin 21 ELISA Kit measures Interleukin 21 in samples. The plate has been pre coated with Human IL21 antibody. IL21 present in the sample is added and binds to antibodies coated on the wells. And then biotinylated Human IL21 Antibody is added and binds to IL21 in the sample. Then Streptavidin HRP is added and binds to the Biotinylated IL21 antibody. After incubation unbound Streptavidin HRP is washed away during a washing step.