intermittent irradiation: loss of effect?
SCCVII (vitro)
(5 X 1.6 Gy)
SCCVII (vivo)
(5 X 4 Gy)
(Tomita et al, 2008)
in vitro: loss of effect with short intervals
in vivo: recovery of sublethal damage compensated by reoxygenation