A, The relationship between placental malaria (PM) and hypergammaglobulinemia. Left circle, proportion of mothers with PM by histology; right circle, proportion of mothers with hypergammaglobulinemia; shaded middle area, proportion of mothers with both PM and hypergammaglobulinemia. B, The relationship between cord-to-maternal titer ratios (CMTRs) and cord plaque-reduction neutralization titers (PRNTs). Left circle, proportion of maternal/cord pairs exhibiting CMTR <1.0; right circle, proportion of cord specimens with PRNT <1:200, shaded middle area, proportion of cord specimens where CMTR was <1.0 and PRNT was <1:200. Abbreviation: FIS, Fetal Immunity Study.