FIG. 3.

Association between the number of DNNND repeats in pfnhe and the quinine concentration that inhibits 50% (A) or 90% (B) of parasite growth. Isolate numbers are in brackets. (A) Our current data from Kilifi. (B) Data from Ferdig et al. (10) (from Table 1). In both graphs, differences between 1 and 2 and between 2 and 3 repeats were significant (P < 0.0 5), while those between 1 and 3 repeats were not (P > 0.05). In the work of Fergid et al. (10), 1 isolate had 4 copies (IC₉₀ = 582 nM) and was not included.