Cytotoxicity of the Sesquiterpene Lactones Neoambrosin and Damsin from Ambrosia maritima Against Multidrug-Resistant Cancer Cells - Saeed, M; Jacob, S; Sandjo, L P; Sugimoto, Y; Khalid, H E; Opatz, T; Thines, E; Efferth, T (Front Pharmacol, 2015)