Table 1.

The different drug treatment scenarios.

Scenario	Enzyme activities according to drug resistance phenotype
	#1	#2	#3	#4
1: without MB	Wild type strain, no resistance.	Chloroquine-resistant strain: Administration of sulfadoxine.	Sulfadoxine-resistant strain: Administration of chloroquine.	Strain resistant to chloroquine and sulfadoxine: Administration of chloroquine and sulfadoxine.
2: with MB added	Wild type strain, no resistance, MB administered.	Chloroquine-resistant strain: Administration of sulfadoxine and MB.	Sulfadoxine-resistant strain: Administration of chloroquine and MB.	Strain resistant to chloroquine and sulfadoxine: Administration of chloroquine, sulfadoxine, and MB.