FIG 3.
Antibody responses to native PfEMP1 and recombinant PfEMP1 proteins produced in insect or CHO cells. IgG levels against recombinant (FV2BIC and FV2CHO) and the corresponding native (IT4VAR04) VAR2CSA-type PfEMP1 proteins were determined by an ELISA (recombinant proteins) or flow cytometry (native protein). (A) Individual FV2CHO-specific IgG levels in all samples (sample sets 1 to 6). (B and C) Correlation (rs) between IgG levels specific for FV2BIC and FV2CHO in Colombian (set 1 and set 2) (B) and Ghanaian (set 5) (C) samples. (D) Correlation (rs) between IgG levels specific for FV2CHO and the corresponding native VAR2CSA-type protein in Colombian samples (set 1 and set 2). The panel layout is the same as in Fig. 1.