Fig. 2From: Radiosensitization of clioquinol and zinc in human cancer cell linesEffects of CQ and zinc on the radiosensitivity of cancer cells. Clonogenic cell survival curves were generated for HeLa (a) and MCF-7 (b) cells that were treated with DMSO、5 μM CQ + 10 μM zinc、50 μM MG132 + 5 μM CQ + 10 μM zinc (MG132 for 2 h prior to CQ and zinc), and then were exposed to various doses (0, 1, 2, 4, 6, 8 and 10 Gy) of irradiation. The survival data were normalized to those of the unirradiated control group. The data are shown as the means ± SEM for three independent experiments. **P < 0.01Back to article page