ODN 2336 sodium is a A-Class CpG ODN (oligodeoxynucleotides), is a potent TLR9 agonist. ODN 2336 sodium induces the production of IFN-α. ODN 2336 sodium up-regulates the expression of IP-10 mRNA and IL-18 mRNA. ODN 2336 sodium can be used as adjuvant of vaccines[1][2][3].