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Results of an IgG ELISA using His-EBO-NP (a) and GST-EBO-NP/C-half (b) for EBO antibody detection. The ODs of the 14 EBO sera at dilutions of 1:400, 1:1,600, and 1:6,400 are shown here. Lines indicate the threshold at each dilution level. The threshold was set at the mean plus 3 SD, which was calculated from the ODs of the 48 control sera.
