Figure 1From: Trends in drug resistance codons in Plasmodium falciparum dihydrofolate reductase and dihydropteroate synthase genes in Kenyan parasites from 2008 to 2012Prevalence of single nucleotide polymorphism in Pfdhfr and Pfdhps . The overall prevalence of genotypes at each codon on the Pfdhfr and Pfdhps genes were determined over the 5Â year period, calculated as a percentage of the total number of samples successfully analyzed over the study period per codon.Back to article page