Indium In 111 Monoclonal Antibody BrE-3

**Semantic type:** Amino Acid, Peptide, or Protein|Indicator, Reagent, or Diagnostic Aid|Pharmacologic Substance

**Definition:** A humanized monoclonal antibody conjugated to the imaging radioisotope (indium-111). This radioimmunoconjugate binds to the breast epithelial mucin antigen, which is found primarily on breast cancer cells, permitting radioactive immunodetection of mucin-positive tumor cells and an estimate of radiation dosimetry prior to administration of cytotoxic radiotherapy. (NCI04)

**Synonyms:** - In 111 Monoclonal Antibody BrE-3