A term that refers to antibody production. The aspect of immunity that is mediated by secreted antibodies that are produced by B cells. Secreted antibodies bind to antigens, flagging them for destruction.

An acid made in the stomach that works with pepsin and other enzymes to break down proteins.

An odorless, colorless, flammable gas that combines chemically to form water.

A test for lactose intolerance that measures breath samples for hydrogen levels. The body makes too much hydrogen when lactose is not broken down properly in the small intestine.

The condition of having too much bilirubin in the blood, which occurs when the liver does not work normally or blood breaks down too quickly. Symptoms include jaundice.

Having too much hydrochloric acid in the stomach.

The most common form of polyps, usually found in the sigmoid colon and rectum. These polyps are not thought to progress to cancer.

Abbreviation for inflammatory bowel disease.

Abbreviation for irritable bowel syndrome.

Related to the ileum, the lowest end of the small intestine.