this extra increase in radiosensitivity is of unknown metabolic origin , but could be related to cellular membrane fragility in the stressed 66q cells since this extra component of q-cell radiosensitivity was reduced both by refeeding ( metabolic activation ) 4 h before x-irradiation and by delayed plating while incubating the cells in q medium at 37 degrees c after x-irradiation .
C0007603
cellular membrane
C0007634
the cells