Used to measure interleukin-2 (IL-2) levels in mouse biological samples such as serum, plasma, or cell culture supernatants with high sensitivity. This assay is commonly applied in immunology research to study T-cell activation, immune responses, and inflammation. It is also used in preclinical studies evaluating vaccines, autoimmune diseases, and immunotherapies where precise quantification of low-abundance IL-2 is critical. The high sensitivity format allows detection of small changes in IL-2 concentration, making it suitable for experiments with limited sample volume or low cytokine expression.