Figure 2. X-irradiation caused more serious damage and cell killing in directly irradiated HaCaT cells than 56 cGy of α-particles did.
Panel a, the micronucleus formation in HaCaT cells 48 h after irradiation. Panel b, the cell survival of irradiated HaCaT cells. * P < 0.05, ** P < 0.01, *** P < 0.001 compared with the sham irradiated control.