Fig. 4.

Effects of CQ and zinc on the cycle progression of HeLa cells. a and b: Cells were treated with or without 5 μM CQ and 10 μM zinc for 4 h prior to exposure to 6 Gy of irradiation (IR). After 24 h, both attached and floating cells were harvested for cell cycle analysis. Shown are representative images of three independent experiments. *P < 0.05