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. 2009 Jan 12;77(3):1165–1174. doi: 10.1128/IAI.01129-08

FIG. 3.

FIG. 3.

Effect of exposure on prevalence of IgG subclass responses to different merozoite antigens. Exposure was determined by IgG reactivity to P. falciparum schizont extract. Children were grouped into quartiles (Q1 to Q4, where Q1 represents the group with the lowest IgG response to P. falciparum schizont extract), and the proportions of individuals who were positive for IgG1 and IgG3 for each quartile are shown. P < 0.0001 for differences in prevalence of IgG1 or IgG3 between groups for all antigens, except P = 0.001 for MSP2 3D7 IgG1. The 3D7 allele was used for MSP1-19 and AMA-1.