All are cytokines except: (A) Monoclonal antibody, (B) Interleukins, (C) Chemokines, (D) TNF
Answer is A. ref Robbins 9/e p86 Monoclonal antibodies (mAb or moAb) are antibodies that are made by identical immune cells that are all clones of a unique parent cell. Monoclonal antibodies can have monovalent affinity, in that they bind to the same epitope (the pa of an antigen that is recognized by the antibody).