Used in immunological research to quantify mouse interleukin-12 (IL-12 p40 subunit) levels in biological samples such as serum, plasma, and cell culture supernatants. This ELISA kit enables researchers to study immune responses, particularly in models of infection, autoimmunity, and cancer. It is widely applied in preclinical studies to assess the activation of Th1 immune pathways and to evaluate the efficacy of therapeutic agents that modulate cytokine production. The assay provides high specificity and sensitivity, making it suitable for monitoring IL-12 p40 as a biomarker in inflammatory and infectious disease research.