Fig. 4

Phagocytosis of FCR3S1.2 pRBCs after opsonization with polyclonal anti-PfEMP1 antibodies or sera from human immune samples. a Capacity of the ITvar60goat IgG to opsonize and induce phagocytosis of FCR3S1.2 pRBCs. Antibodies were tested in serial dilutions between 90 and 900 μg/ml. b Capacity of the immune sera (IM1–IM6 and pooled together IMP) to opsonize and induce phagocytosis of FCR3S1.2 pRBCs. All sera samples were tested at 1:5 dilution. Pooled Swedish non-immune control is depicted in blue