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(a) Schematic representation of the PfRh4 recombinant proteins used in this study, relative to full length PfRh4. TM: transmembrane domain. Numbers represent amino acids. (b) IgG reactivity to PfRh4 recombinant proteins measured by ELISA. Results are shown as median OD and interquartile ranges by age group (≤ or >9 years of age) or parasitemic status (PCR- or PCR+) for PfRh4.2 (left panel) and PfRh4.9 (right panel).
