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G1/S cell cycle arrest induced by beryllium is p53 dependent. Normal A172 cells (a), E6‐expressing cells (b) or vector‐control cells (c) were cultured in the presence or absence of 10 μm BeSO 4 for 72 h, then stained with propidium iodide and analysed by flow cytometry. DNA content per cell was used to determine cell cycle phase. The percentage of cells (mean ± SD) in each phase is shown
