Figure 3
DNA synthesis in HeLa cells . HeLa cells were treated with 8 μM cisplatin, with 5 mM butyrate, or with both. At the specified times aliquots were withdrawn, 1 μCi/mL of 3H-thymidine was added and 30 min later the cells were collected, washed and counted. 3H incorporation was expressed as percentage of the control. The results are means of three independent experiments and standard deviations are shown with error bars.