Sequence polymorphism of the PvMSP-3β in Korean Plasmodium vivax isolates. Sequence analysis of 95 P. vivax Korean isolates revealed five distinct subtypes of PvMSP-3β. The large-scale insert A and insert B are boxed with the blue line or dotted red line, respectively. The five small insertions (S1-S5) in the N-terminal and C-terminal domains are indicated with bold lines on the sequences. The total number of sequences for each subtype are listed in the right panel. The PvMSP-3β sequences of the Salvador I (Sal I), Belem and Chess were compared to those of Korean P. vivax isolates.