dose-response curves for dna from cells irradiated in air were identical regardless of whether the exponential-phase cells had been subcultured 24 or 48 h prior to irradiation , but cells irradiated in hypoxia 24 h after subculture displayed a dose-response curve for dna damage which was two times steeper than that obtained for cells irradiated in hypoxia 48 h after subculture .
C0012854
dna
C0000702
a