Figure 2From: The evolution of pyrimethamine resistant dhfr in Plasmodium falciparum of south-eastern Tanzania: comparing selection under SP alone vs SP+artesunate combinationComparison of dhfr triple mutant allelic haplotype between Kilombero-Ulanga and Rufiji populations in 2001, 2002 and 2006. Frequency values are shown with 95% CI bars calculated by binomial exact method.Back to article page