Fig. 5From: Naturally induced humoral response against Plasmodium vivax reticulocyte binding protein 2P1 Complement-fixing activity correlates with the IgG1 and IgG3 levels. Antibody levels in arbitrary units (AU) of infected individuals are plotted as a function of complement-fixing (C1q-binding) activity (n = 56). rs, Spearman’s rank correlationBack to article page