NCIt definition : A recombinant, murine monoclonal antibody directed against gastrin-releasing peptide,
one of a number of bombesin-like peptides (BLP). Tumor cells, such as small cell lung
cancer (SCLC) cells, express and secrete BLP that activate specific cell growth-promoting
receptors. Monoclonal antibody 2A11 has been shown to decrease the growth of SCLC
cells in vitro and in animal models. (NCI04);