<prompt> Which of the following is a radioprotectorColony stimulating factorCisplatinAmifostineMethotrexate  <response>: Amifostine:- It is an organic thiophosphate which on activation by alkaline phosphatase acts as a cytoprotective against cancer chemotherapy and radiotherapy. Uses:- It is paicularly used for prophylaxis of cisplatin induced neuronephrotoxicity, and radiotherapy related xerostomia. Adverse effects:- Sho term side effects of amifostine are nausea, vomiting, hypotension and infusion related reaction. Delayed adverse effect is hypocalcaemia. Ref:- kd tripathi; pg num:-876 