Fig. 2. Compounds 3, 6 in Triterpenoids with anti-proliferative effects from the seeds of Peganum harmala L.

Fig. 2. Compounds 3, 6, and 15 decreased the cell viability of HeLa cells in a dose-dependent manner. A. A colony formation assay was used to evaluate the effects of compounds 3, 6, and 15 on the proliferation of HeLa cells. B. Compounds 3, 6, and 15 induced apoptosis of HeLa cells and a change in cell nuclei morphology.