beta-glucans

Definition of beta-glucan

beta-glucan

(BAY-tuh-GLOO-kan)
A substance found in bacteria, plants, and certain foods, such as baker’s yeast, cereal grains, and mushrooms. It is a type of polysaccharide that is made of a string of glucose (sugar) molecules joined together. Beta-glucan may stimulate the immune system and help kill cancer cells. It is being studied in the treatment of cancer. It is a type of biological response modifier.

Source: NCI Dictionary of Cancer Terms