Growth inhibition of wild type D10 and ΔVP2::yDHODH transgenic parasites was assessed by standard 3H-hypoxanthine incorporation assay for atovaquone (A), DSM1 (B), WR99210 (C), and blasticidin (D). The calculated IC50 values for these compounds are listed in the Results section. Solid lines, wild type D10 parasites; dashed lines, ΔVP2::yDHODH parasites.