Fig. 2. dose-response curve for drug resistant Plasmodium falciparum W-2 strain in the presence of different concentrations of amplexine (djalonenol, tetrahydro-3-(hydroxymethyl)-4-[1-(hydroxymethyl)-2-propenyl]-2H-pyran-2-one) in a representative experiment. IC ₅₀ : half-maximal inhibitory concentration.