FIG 2.
Correlations between IC50s of cultured parasite isolates to eight antimalarial drugs. The correlations between IC50s were analyzed by Spearman's test. The degree of correlation between IC50s of two drugs is color coded, and coefficients are shown in the upper diagonal. One and two asterisks show the significance levels. Except for DHARSA, which is the result from the RSA, susceptibilities (IC50s) to the rest of the drugs were measured using the SYBR green I-based assay. ATS, artesunate; DHA, dihydroartemisinin; CQ, chloroquine; PPQ, piperaquine; QN, quinine; PND, pyronaridine; LMF, lumefantrine; MQ, mefloquine.