Assessing the anti-tumour properties of Iraqi propolis in vitro and in vivo

► We selected one propolis extract with highest cytotoxic effects on cancer cells. ► We have investigated the chemical composition by using HPLC-ESI-MS. ► We have elucidated the cell cycle perturbations induced by propolis compound M. ► This is the first study that investigated propolis by using BrdU/DNA assay.