of particular significance was the finding that one isolate ( t ( 9 ) ) , which on initial testing was resistant to chloroquine , pyrimethamine and sulfadoxine-pyrimethamine , yielded a clone of parasites markedly more sensitive to these three drugs , while five other clones resembled the original isolate in drug susceptibility .
C0034283
pyrimethamine
C0700599
sulfadoxine-pyrimethamine