Used in immunological research to quantify interleukin-35 (IL-35) levels in biological samples such as serum, plasma, or cell culture supernatants. Enables researchers to study the role of IL-35 in immune regulation, inflammation, and autoimmune diseases. Commonly applied in studies related to rheumatoid arthritis, multiple sclerosis, and cancer immunology. Supports high-throughput analysis with high sensitivity and specificity, making it suitable for both basic research and preclinical studies.