Fig. 2From: The presence of circulating antibody secreting cells and long-lived memory B cell responses to reticulocyte binding protein 1a in Plasmodium vivax patientsThe seroprevalence of IgG subclass responses to PvRBP1a. The comparative anti-IgG1, -IgG2, -IgG3, and -IgG4 responses specific to PvRBP1a in seropositive subjects during acute malaria (n  = 41). The horizontal line represents mean values  ±  SEM. Dashed line indicates the cut-off value. Dark grey and light grey area represent seropositive and seronegative subjects, respectively. **P  < 0.01; ***P  < 0.001Back to article page