NCIt definition : A 2-nitroimidazole with radiosensitizing properties. Etanidazole depletes glutathione
and inhibits glutathione transferase, thereby enhancing the cytotoxicity of ionizing
radiation. This agent may also be useful as an imaging agent for identifying hypoxic,
drug-resistant regions of primary tumors or metastases. (NCI04);
Alternative definition : NCI-GLOSS: A drug that increases the effectiveness of radiation therapy.;