This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Which of the following anti-cancer drug comes under monoclonal antibodies: March 2013 \nSelect and explain. \nA. Di-ethyl-stilbestrol, B. Tamoxifen, C. Ritumixab, D. Boezomib', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. Ritumixab Rituximab It is a chimeric monoclonal antibody against the protein CD20, which is primarily found on the surface of B cells. Rituximab destroys B cells, and is therefore used to treat diseases which are characterized by excessive numbers of B cells, overactive B cells, or dysfunctional B cells. This includes many lymphomas, leukemias, transplant rejection, and autoimmune disorders.', 'role': 'assistant'}]