Instability of resistance of Plasmodium falciparum to chloroquine and pyrimethamine in vitro.
D000818:Animals; D002738:Chloroquine / Q000494:pharmacology*; D004351:Drug Resistance; D010963:Plasmodium falciparum / Q000187:drug effects*; D011739:Pyrimethamine / Q000494:pharmacology*
D002738:Chloroquine; D011739:Pyrimethamine