Human IL-21 ELISPOT assay

Accurate quantitative tools for the measurement of IL-21 are becoming increasingly important. The IL-21 ELISPOT is an ideal tool to measure IL-21 secretion at the single cell level.  IL-21 is a popular cytokine, not only for its biological effects and signaling mechanism(s), but also for its clinical potential. IL-21 is primarily secreted by T cells and natural killer T (NKT) cells, and has diverse effects on a broad range of cell types (including macrophages, B cells, dendritic cells, NK cells and various T cells). 

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