<prompt> Threshold radiation dose for hematological syndrome is?2 Gy6 Gy15 Gy50 Gy  <response>: Ans. isai.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. 