Andrographolide isolated from Andrographis paniculata induces cell cycle arrest and mitochondrial-mediated apoptosis in human leukemic HL-60 cells. - Cheung,H-Y.; Cheung,S-H.; Li,J.; Cheung,C-S.; Lai,W-P.; Fong,W-F.; Leung,F-M. (Planta Med, 2005)