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Figure 4 | Malaria Journal

Figure 4

From: The ears of the African elephant: unexpected high seroprevalence of Plasmodium ovale and Plasmodium malariae in healthy populations in Western Africa

Figure 4

Distribution of positive samples according to the ELISA’s index for P. falciparum , P. malaria and P. ovale recombinant antigens. The cut-off value was calculated by multiplying the negative control wells’ average optical density (OD) by three. The antibody (Ab) index of each sample was calculated by dividing its OD value by the cut-off value. The sample was considered positive if the Ab index was >0.7, and negative if the Ab index was ≤0.7.

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