Average IC50s for antimalarial agents determined from growth inhibition assays with P. falciparum strains 3D7, 3D7attB, and 3D7attB-yDHODH. Ato, atovaquone; MB, methylene blue; bNQ, benzylnaphthoquinone 1c from reference 22; CQ, chloroquine. All values are means ± the standard errors of the mean from three independent growth inhibition assays. The IC50s are summarized in Table 1.