Used primarily in immunology and cancer research to stimulate the immune system. It acts as a synthetic double-stranded RNA that mimics viral infection, triggering an immune response. This makes it valuable in studies of antiviral and antitumor activities. Additionally, it is employed as an adjuvant in vaccines to enhance immune responses. Its ability to activate toll-like receptors (TLRs) and induce interferon production is leveraged in therapeutic strategies against viral infections and certain cancers.