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Structure of the P. falciparum Csp. 5′NR and 3′NR brace the CR (hatched) made up of a variable number of tandem repeats encoding 4-aa-long motifs. The light gray boxes represent B-cell epitopes; the dark boxes represent T-cell epitopes. The gene length ranges 1,194–1,413 nucleotides because of two 5′ NR indels and a variable number of CRs.
