Figure 1
125I seed irradiation model developed in-house. In a 60-mm cell culture dish, eight 125I seeds were embedded in the solidified paraffin evenly around the circumference of a 35-mm diameter, and one 125I seed was placed at the center of dish. This arrangement produced a homogeneous dose distribution at the top of the cell culture dish, so that a 35-mm cell culture dish containing SW-1990 cells could be placed on it during the experiment.