FIG. 2.
Relationship between plasma levels of VSA-specific IgG and parity in Cameroonian pregnant women. Individual levels of IgG with specificity for VSA expressed by parasites infecting nonpregnant individuals (non-PAM type VSA) (a and b) and by parasites capable of sequestering in the placenta (VSAPAM) (c and d) in pregnant women from Yaounde (a and c) and Etoa (b and d) are shown. The negative cutoff levels (means plus two standard deviations of MFI values) obtained with plasma from nonexposed control donors (horizontal dashed lines) and with plasma from sympatric nonpregnant nulligravidae (horizontal solid lines) are shown for reference.