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. 2006 Jun 23;114(9):1401–1406. doi: 10.1289/ehp.8969

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Synchronization of TR9-7 cells expressing or not expressing p53 in G₂ phase. Abbreviations: FL2-A, propidium iodide fluorescence on channel two; Tet, tetracycline. (A) Experimental design. (B) Cell cycle distribution of synchronized cells. Samples were harvested after treatments indicated and analyzed by flow cytometry. Positions of cells with G₁ and G₂/M phase DNA content are indicated.