[A murine IgG1 monoclonal antibody directed against the human transferrin (Tf) receptor. Monoclonal antibody A27.15 binds to the Tf receptor, blocking the binding of transferrin to the receptor and resulting in decreased tumor cell growth. (NCI04) ( NCI )] (UMLS (NCI) C0677772) =Amino Acid, Peptide, or Protein; Pharmacologic Substance; Immunologic Factor