Figure 1.

Clonogenic survival of G0/G1-phase normal NFF28 primary fibroblasts (A) and asynchronously growing A549 lung carcinoma (B), U2OS osteosarcoma (C), and U87MG malignant glioma cells (D) pretreated for 18 h with 1–20 µM SAHA and exposed to 0.5–6 Gy cesium-137 γ-rays (LET = 0.91 keV/µm). Data reported as mean ± SD; where error bars are not visible, they are smaller than the data point. Asterisks mark significant differences compared to DMSO controls at p-values of ≤0.05 (*) by one-way ANOVA.