Used in immunological research to measure levels of interleukin-2 in duck samples, aiding in the study of immune responses, vaccine development, and disease pathogenesis in avian species. Enables quantitative analysis of IL-2 concentration in serum, plasma, or cell culture supernatants. Supports monitoring of T-cell activity and evaluation of immune system modulation in experimental conditions. Widely applied in veterinary research and poultry health studies.