Listed are ELISA Kits for the detection of Za11, an alias name of interleukin 21. The human protein, encoded by the gene IL21, is 162 amino acid residues long and has a mass of 18,653 daltons. However, there are up to 2 reported isoforms. It is a member of the IL-15/IL-21 family. This protein is reported to have a secreted cellular localization, and is glycosylated. The gene is associated with Immunodeficiency, common variable, 11. For this target protein, ELISA kits with the following species reactivities are available: human, mouse, and rat. This target may also be known as: interleukin-21 isoform, CVID11, IL-21, and Za11.