Stability of IgG1, IgG2 and IgG3 subclasses specific to PvRAMA antigen.

<p>The levels of IgG subclasses, (A) IgG1, (B) IgG2, (C) IgG3 in plasma of the individuals during acute infection and after 3, 9, 12 months of recovery, respectively. The cutoff value for seropositivity was an OD greater than the mean plus 2SD of that from naïve controls as shown by dashed line (IgG1 = 0.058, IgG2 = 0.119, IgG3 = 0.082, IgG4 = 0.051). IgG subclass levels in different groups were compared using the Mann-Whitney <i>U</i> test.