Poly I is a term widely used in the field of molecular biology to refer to polyinosinic acid, an analogue of the natural nucleic acid, RNA. Poly I has been extensively studied for its ability to stimulate the immune system and its use as an adjuvant in vaccines. Synonyms for Poly I can include polyinosinic-polycytidylic acid (poly I:C) and poly (I:C) dsRNA. These terms are often used interchangeably to describe the same molecule. Poly I and its synonyms have shown promising results in various research and clinical applications, highlighting their potential for immunotherapy and antiviral treatments.