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FIG. 4.

FIG. 4.

Serum IgM antibody response to dengue virus challenge in rhesus macaques immunized with combinations of the DENV-2 DNA vaccine (D), DENV-2 PIV vaccine (P), and DENV-2 recombinant vaccine (R) based on ELISA using purified virions. The results are given as the means of the OD405 values for sera diluted 1:100.