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: Radiology
[{'content': 'Threshold radiation dose for hematological syndrome is? \nSelect and explain. \nA. 2 Gy, B. 6 Gy, C. 15 Gy, D. 50 Gy', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is'a'i.e., 2 GyBone marrow or hematological syndrome:- Full syndrome occurs with a dose between 0.7 and 3 Gy (70-300 rads).The destruction of bone marrow cells results in pancytopenia.", 'role': 'assistant'}]