STC2 promotes cell apoptosis.

<p>Cells were treated with a dose of 8Gy X-rays, apoptosis was then measured by flow cytometry in 231 STC2 cells or 231 HM STC2i cells and their corresponding control cells. <b>A-B</b>, Representative images of apoptosis assay. <b>C</b>, The percentage of apoptotic cells (P < 0.05). Error bars = 95% CIs. R+: with Radiation Treatment, R-: without Radiation Treatment.