In 111 Monoclonal Antibody Hu3S193

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

**Definition:** A radioimmunoconjugate of humanized monoclonal antibody (MoAb) 3S193 labelled with Indium 111 (In-111). MoAb Hu3S193 recognizes a Lewis Y carbohydrate antigen present on the surface of many carcinomas. This radioimmunoconjugate emits gamma radiation and X-ray photons, thereby allowing detection of tumor localization and distribution of MoAb HuS193 in diagnostic imaging procedures.

**Synonyms:** - In 111 MoAB Hu3S193 - Indium In 111 Monoclonal Antibody Hu3S193