This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
[{'content': 'Which of the following is a radioprotector? \nSelect and explain. \nA. Colony stimulating factor, B. Amifostine, C. Cisplatin, D. Methotrexate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: AMIFOSTINE: It is an organic thiophosphate which on activation by alkaline phosphatase acts as a cytoprotective against cancer chemotherapy and radiotherapy.It is paicularly used for prophylaxis of cisplatin induced neuro/nephrotoxicity and radiotherapy related xerostomia. ESSENTIALS OF MEDICAL PHARMACOLOGY K.D.TRIPATHI SEVENTH EDITION PAGE NO:876', 'role': 'assistant'}]