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Comparison of IL-8 HPs with different linker lengths. The HP sequences for IL-8 are listed in Table 1 as IL-8 HPL0, IL-8 HPL1, IL-8 HPL2 and IL-8 HPL3. The hairpin was closed in the blank control and opened after hybridization with RNA. The concentration of IL-8 RNA was 5 nM. The mean and SD of four experiments are shown. The configurations of the HPs with different linker length are shown schematically.
