Background : Reactive oxygen species (ROS) can be lethal for the cell. Edible plants due to containing antioxidants reduce risk of disease and damages resulting from ROS. The aim of this study was to determine the antioxidant and cytotoxicity effects of aqueous and alcoholic fruit extracts of Rose Canina on the cell line U937. Materials and Methods: Cell line U937 (cell leukemia , human ) purch...