Definition

A substance being studied as a way to find certain types of cancer in the body. It contains a radioactive substance called technetium linked to a substance called demobesin. Demobesin binds to the receptor for bombesin (a substance that is found at higher-than-normal levels on some types of cancer cells). Technetium Tc 99m-demobesin-4 collects in cancer cells and a machine is used to find where the cancer cells are in the body.