Fig. 4From: Cytotoxic and cell cycle arrest properties of two steroidal alkaloids isolated from Holarrhena floribunda (G. Don) T. Durand & Schinz leavesEffects of IC50 concentrations of compounds 1 and 2 on DNA synthesis at 12, 24 and 48 h based on the chemiluminescent BrdU ELISA assay. Bars with non identical letters are significantly different from each otherBack to article page