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Fig. 1 | Malaria Journal

Fig. 1

From: Immunogenicity of the Plasmodium vivax merozoite surface protein 1 paralog in the induction of naturally acquired antibody and memory B cell responses

Fig. 1

Humoral immune response to PvMSP1P-19. The antibody levels were detected in human plasma from acutely P. vivax-infected patients (n = 40), villagers in endemic areas (n = 15) and naïve controls (n = 22). Each symbol represents an individual sample. The dashed line indicates the cut-off value [mean ± 2 standard deviations (SD) of the optical density (OD) value of malaria-naïve individuals]. A nonparametric Mann–Whitney U test was used to assess the significant difference in the antibody titre levels against the PvMSP1P-19 antigen. The level of significance was set at a P value <0.05

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