قره علي أحمد, العلي بدر, and حمود رامي. 2020. “Polymyxin Is Isolated from Marine Bacillus Polymyxa Bacteria and Its Effect in Pathogenic Bacteria”. Tishreen University Journal -Biological Sciences Series 42 (2). https://journal.tishreen.edu.sy/index.php/bioscnc/article/view/9646.