“…However, these cancer cells are efficiently killed by carbon ions (Iwadate et al, 2001;Tsuchida et al, 1998). Interestingly, it has been recently reported that the amount of micronuclei induced in glioblastoma cell lines by neutron, but not by photon, was dependent on the intrinsic ability of these cells to activate a G1-phase arrest (Akudugu et al, 2004). On the other side, the activation of the G1 checkpoint has been shown to be dependent on the type of specific DNA damage inducer.…”