the expression of x-ray induced pld caused by 6 mm caffeine in cells irradiated in various phases of the cell cycle resulted in an exponential survival curve with a mean lethal dose d0 = ( 0 . 8 +/- 0 . 05 ) gy but the time of caffeine treatment necessary to reach this curve was different for cells irradiated in different phases of the cell cycle .
C0007634
cells
C1516337
phases