Fig. 3From: Cytotoxicity of Plumbagin, Rapanone and 12 other naturally occurring Quinones from Kenyan Flora towards human carcinoma cellsEffects of plumbagin (4), rapanone (9), and doxorubicin on MMP in MCF-7 cells for 72 h. IC50 values were 0.06 μM (4), 16.94 (9) and 0.35 μM (doxorubicin). Cells were treated with ¼ × IC50 (C1), ½ × IC50 (C2) and IC50 (C3) of each compoundBack to article page