The College of Science at the University of Basrah organized a seminar  (Bacteriocins as natural weapon against cancer) by the graduate student (Haneen Abdulkareem Jasim) The study aims to highlight bacteriocins as natural therapeutic alternatives to conventional chemotherapeutic drugs used in cancer treatment. The study included (An introduction to cancer, The concept of using bacteriocins, The chemical structure of bacteriocin, Types of bacteriocins, Anticancer mechanisms of bacteriocins, Recent studies, Conclusion).