Figure 5.
Non-immune IgM-binding and specific PfEMP1 expression on the surface of infected erythrocytes selected by rat anti-PfEMP1 domain-specific IgG. P. falciparum 3D7 (left), HB3 (center), and IT4 (right) with heterogeneous var gene transcription (Fig. S1) after several rounds of selection for IE reactivity with rat anti-PF07_0139, anti-HB3VAR40, and anti-IT4VAR67, respectively, and labeled with the antibody used for selection (A) or non-immune IgM (B). Background labeling indicated in black. Correlation (rs) of non-immune IgM-binding and labeling by PfEMP1-specific IgG for all selected parasites expressed as percentage of IEs (C).