Used to quantitatively measure mouse CCL21 (also known as Exodus-2 or secondary lymphoid-tissue chemokine) in biological samples such as serum, plasma, cell culture supernatants, and tissue extracts. This ELISA kit is particularly useful in immunology research for studying immune cell trafficking, as CCL21 plays a key role in the recruitment of dendritic cells, T cells, and other lymphocytes to sites of inflammation and in the organization of secondary lymphoid organs. It is widely applied in studies related to autoimmune diseases, cancer immunology, and inflammatory responses, especially when examining non-lymphoid tissues where CCL21 expression may be upregulated during pathological conditions. The assay provides high sensitivity and specificity, enabling accurate detection of low concentrations of CCL21, which is critical for understanding chemokine-mediated signaling in mouse models.