JOHN BAVOSI / SCIENCE PHOTO LIBRARY JOHN BAVOSI / SCIENCE PHOTO LIBRARY
Intestinal ulcer. Artwork of a block cutaway section from the intestines, showing an ulcer, a localised area of tissue degeneration. Villi are protruding on the intestinal surface. This ulcer has penetrated the upper mucosal layers and is filled with pus (yellow), bacterial debris and blood (red). Also known as a peptic ulcer, this condition occurs when digestive juices attack the intestinal walls, usually due to reduced production of the protective mucus. Treatment is with antacid drugs, which reduce the acidity of the stomach's juices, or ulcer-healing drugs such as cimetidine.
Model release not required. Property release not required.