Here, the aggressive factors represent the acid, pepsin, bile salts, drugs (NSAIDs), and H. pylori and the defensive factors are represented by mucus, bicarbonate layer, proper blood flow, cell renewal prostaglandins, and phospholipids. | Here, the aggressive factors represent the acid, pepsin, bile salts, drugs (NSAIDs), and H. pylori and the defensive factors are represented by mucus, bicarbonate layer, proper blood flow, cell renewal prostaglandins, and phospholipids. |