Yttrium Y 90 Monoclonal Antibody B3

**Semantic type:** Amino Acid, Peptide, or Protein|Pharmacologic Substance

**Definition:** A radioimmunoconjugate of monoclonal antibody (MoAb) B3 conjugated with isotope yttrium 90. MoAb B3 is a murine MoAb that recognizes a Lewis Y carbohydrate antigen present on the surface of many carcinomas. This radioimmunoconjugate emits beta particles that causes cytotoxicity in tumor cells and has both diagnostic and therapeutic uses.

**Synonyms:** - 90 Y-B3 - MOAB B3, Yttrium Y 90 - Y 90 Monoclonal Antibody B3 - Y90-B3