Cytotoxic activity of Rauvolfia tetraphylla L. on human cervical cancer (HeLa) cells Santiago-Cruz JAngel, Arrieta J, García-Machorro J, Arrieta-Baez D, Sánchez-Mendoza MElena. Cytotoxic activity of Rauvolfia tetraphylla L. on human cervical cancer (HeLa) cells. Pharmacognosy Magazine . 2019;15(65):631-637.