Used in immunological research to quantify mouse Toll-like receptor 9 (TLR-9) levels in biological samples such as serum, plasma, cell lysates, and tissue homogenates. This ELISA kit enables researchers to study TLR-9 activation in response to CpG DNA motifs, helping to investigate innate immune responses, inflammation, and autoimmune diseases in mouse models. It is widely applied in preclinical studies involving vaccine development, infectious diseases, and immunotherapy to assess immune system modulation. The assay provides a sensitive and specific method for monitoring TLR-9 expression changes under experimental conditions, supporting mechanistic studies in immunology and drug discovery.