Fig. 3From: Polymorphisms analysis of the Plasmodium ovale tryptophan-rich antigen gene (potra) from imported malaria cases in Henan ProvinceGenetic relationship of potra among isolates of Plasmodium ovale subspecies. Black triangles represented the isolates in this study. The reference sequences of P. ovale spp., HM594180–HM594183, KF018430–KF018433 and KX417700–KX417704, were obtained from the NCBI databaseBack to article page