Article citation: Bouallagui, Z., Han, J., Isoda, H., & Sayadi, S. (2011). Hydroxytyrosol rich extract from olive leaves modulates cell cycle progression in MCF-7 human breast cancer cells. Food and chemical toxicology, 49(1), 179-184.
Link to view/access: https://www.ncbi.nlm.nih.gov/pubmed/20955751