ODN D-SL01 sodium, a class B CpG ODN (oligodeoxynucleotide), sodium is a TLR9 agonist. ODN D-SL01 sodium has strong immunostimulatory activity in a variety of vertebrate species and has anticancer activity. ODN D-SL01 sequence: 5′- T-C-G-C-G-A-C-G-T-T-C-G-C-C-C-G-A-C-G-T-T-C-G-G-T-A-3′^[1].