Anti-IL-15 antibodies enable researchers to detect and measure the IL-15 antigen in biological samples. This target is a reported synonym of the IL15 gene, which encodes interleukin 15. This protein is known to function in pathways of aging and cell to cell signaling, among other biological roles. The human version of IL-15 has a canonical amino acid length of 162 residues and a protein mass of 18.1 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the nucleus, cytoplasm, and is secreted of cells and notably expressed in many tissues, such as the lymph node and tonsil. IL-15 is a member of the IL-15/IL-21 protein family. Over 160 citations in the literature describe the use of IL-15 antibodies in research. ELISA is a widely used application for these antibodies. In addition, Western Blot is also a common application.