Figure 2.

STS promoted cell proliferation activity in radiation-treated H9c2 cells. (a) Representative images of clonogenic assays show that radiation exposure inhibited the colony-forming capacity in a dose-dependent manner and that STS alleviated the suppressive effect of radiation. (b) The results of the clonogenic assays were normalized to the clonogenic survival of nonradiated control cells, and the survival fractions were plotted (n = 3). ^#p < 0.05 and ^##p < 0.01 versus the 0-Gy radiation group; ^∗p < 0.05 versus the corresponding radiation alone groups.