Used to detect and quantify neutrophil elastase (NE) activity in biological samples from mice, such as serum, plasma, tissue homogenates, and cell culture supernatants. This ELISA kit is specifically designed to measure active forms of NE, making it a valuable tool in inflammation and immune response studies. Commonly applied in research on lung diseases like emphysema and acute lung injury, where NE plays a key role in tissue remodeling and degradation. Also used in autoimmune disease research, sepsis models, and cancer studies involving tumor microenvironment and immune cell infiltration. The assay helps evaluate the effectiveness of NE inhibitors and anti-inflammatory drugs in preclinical mouse models.