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Following incubation with various concentrations of aptamer S15 (0–100 μM), DENV HAWAII, DENV-2 NGC, DENV-3 H-87, and DENV-4 814669 were further incubated with Vero E6 cells, respectively. The infection was determined by PRNT assay. Samples were measured in triplicate and means were shown with standard error.
