<p>Cells were plated for colony survival assay. Salubrinal (4.5 µM) or the vehicle was added immediately following radiation with 1 Gy. Acidic β-Galactosidase activity is reflected in the blue stain. Numbers are average of senescent looking cells/colony ± SD in triplicate plates and differences between the combined treatments and each one of the sole treatments as well as between each treatment and control were statistically significant <i>p</i>< 0.05. Bar,100 µM.</p
