Used in immunological research to quantify bovine interferon-lambda (IFN-λ) levels in biological samples such as serum, plasma, and cell culture supernatants. This ELISA kit enables detection and measurement of IFN-λ, a type III interferon involved in antiviral defense mechanisms in cattle. It is particularly useful in studies related to viral infections like bovine viral diarrhea virus (BVDV), rotavirus, and other pathogens affecting the bovine respiratory and digestive systems. The kit supports evaluation of immune responses in vaccine development, disease pathogenesis, and host defense studies in veterinary and agricultural research settings.