Fig. 3From: Cytotoxic and cell cycle arrest properties of two steroidal alkaloids isolated from Holarrhena floribunda (G. Don) T. Durand & Schinz leavesEffects of compounds 1 and 2 on cell cycle progression of HT-29, HeLa and MCF-7 cells stained with PI and evaluated using flow cytometry. The significant levels are indicated with supescripts * * * *P < 0.0001, * * *P < 0.001 and * *P < 0.01Back to article page