Figure 1From: The evolution of pyrimethamine resistant dhfr in Plasmodium falciparum of south-eastern Tanzania: comparing selection under SP alone vs SP+artesunate combinationAllelic haplotype frequency change at dhfr gene over time: (a) Rufiji (b) Kilombero - Ulanga. Frequency values are shown with 95% CI bars calculated by binomial exact method.Back to article page