at cumulative total doses of 50 , 150 , 300 , and 450 cgy , samples of cells were assayed for cell survival and neoplastic transformation with or without the administration of 0.1 micrograms/ml of 12-o-tetradecanoylphorbol-13-acetate ( tpa ) starting 24 h after the irradiation .
C0007634
cells
C0007620
cell survival