delivery of 60co gamma-rays at a low dose rate ( 0.1 , 0.5 , 2.5 cgy min-1 ) compared with a high dose rate ( 100 cgy min-1 ) results in appreciable , dose rate dependent reductions in cell killing and , independent of the effect on cell survival , reduces significantly the incidence of neoplastic transformation .
C0007634
cell
C0007620
cell survival