Figure 1

HeLa cells mortality rates . Exponentially growing HeLa cells were treated with 8 μM cisplatin, with 5 mM butyrate, or with both. At days 1, 2 and 3 after the treatment, cells were collected, stained with trypan blue and counted. The numbers of viable cells were expressed as percentage of the number of control cells at day 1. The results are means of three independent experiments and standard deviations are shown with error bars.