Saponin-based Immunoadjuvant OBI-821

**Semantic type:** Pharmacologic Substance

**Definition:** A purified, natural saponin isolated from the soapbark tree Quillaja saponaria Molina with potential immunoadjuvant activity. When co-administered with a vaccine, OBI-821 may increase antibody and cytotoxic T-lymphocyte (CTL) responses against the vaccine's targeted antigen(s).

**Synonyms:** - OBI-821 - OBI-821 - OPT-821