Possible artefacts in the in vitro determination of antimalarial activity of natural products that incorporate into lipid bilayer: apparent antiplasmodial activity of dehydroabietinol, a constituent of Hyptis suaveolens - Ziegler,H.L.; Jensen,T.H.; Christensen,J.; Stærk,D.; Hägerstrand,H.; Sittie,A.A.; Olesen,C.E.; Staalsø,T.; Ekpe,P.; Jaroszewski,J.W. (Planta Medica, 2002)