Used to detect and quantify mouse matrix metalloproteinase-9 (MMP-9) in biological samples such as serum, plasma, tissue homogenates, and cell culture supernatants. It is widely applied in research settings to study inflammatory diseases, cancer progression, and tissue remodeling, as MMP-9 plays a key role in extracellular matrix degradation. The kit enables sensitive and specific measurement of MMP-9 levels, supporting investigations in immunology, oncology, and cardiovascular research. Its high specificity allows differentiation of MMP-9 from other matrix metalloproteinases, making it a valuable tool in mechanistic and biomarker studies.