Used in immunological research to quantify levels of indoleamine 2,3-dioxygenase 1 (IDO1) in mouse samples. This kit enables researchers to measure IDO1 protein concentration in cell lysates, tissue homogenates, and biological fluids, supporting studies in immune regulation, cancer, inflammation, and autoimmune diseases. The assay is valuable in preclinical studies where mouse models are used to investigate the role of IDO1 in modulating immune responses, particularly in tumor microenvironments and during infectious disease progression. It provides a reliable, sensitive, and specific method for monitoring IDO1 expression changes in response to therapeutic interventions or experimental conditions.