Monoclonal Antibody 3A1

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

**Definition:** A murine monoclonal antibody that recognizes CD7 (previously known as 3A1), a cell surface antigen expressed by most normal mature peripheral T cells and T cell acute lymphoblastic leukemias. Monoclonal antibody 3A1 is used to diagnose and classify T cell malignancies. This agent can also be conjugated to toxins for potential use in cancer immunotherapy. (NCI04)

**Synonyms:** - MAb 3A1 - MOAB 3A1