This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'All are cytokines except \nSelect and explain. \nA. Monoclonal antibody, B. Interleukins, C. Chemokines, D. TNF', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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).', 'role': 'assistant'}]