Fig. 3

High-power time-lapse images of Fucci fluorescence following irradiation. Cells grown on 35-mm dishes were irradiated with 6 Gy at point A as shown in Fig. 1, and the dishes were transferred to an observation chamber. Fluorescence images were acquired every two hours until 72 h after irradiation at positions 5 and 20 mm from the Ir-192 source. Unirradiated cells were also observed as a control