NCIt definition : A monoclonal antibody directed against the neurohormone bombesin that is conjugated
to isothiocyanobenzyl diethylenetriaminepentaacetic acid (ITC-D), a bifunctional chelating
agent that allows the antibody to be labeled with a metal species. Levels of the neurohormone
bombesin, also known as gastrin releasing peptide (GRP), are elevated in lung and
thyroid cancers, where the substance acts as an autocrine growth factor. (NCI04);