Fig. 5. Radon exposure increases the cells’ ability of clone-forming. (A) A plate clone formation assay of BEAS-2B cells after exposure to radon is shown. 1 × 103 cells from each group were plated into a new D-100 cell culture dish for clone formation assay in 2 weeks. Representative images from each group are shown. (B) Relative ratio of colony formation is shown. Results are expressed as means ± SD (n = 4). (*p < 0.05 indicated radon exposure times vs. control group).
