Figure 3.

Loss of STC2 enhances radiation-triggered death of NPC cells.

Notes: CNE-2, CNE2-STC2-KOA and CNE2-STC2-KOB cells were cultured under normoxic (21% O₂) or hypoxic (1% O₂) condition to reach 80% confluence and irradiated with 4 Gy X-radiation. Six hours later, cells were digested with 0.25% trypsin and cell survival was determined by Trypan blue staining. Living or dead cells were counted under a light microscope. Cell survival rates were calculated as: (Number of living cells/Total cell numbers)×100%. *P<0.05.

Abbreviation: NS, not significant.