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Effect of aCD4 and cytokine presentization on the redistribution of cell cycle phases in Hela cells. Representative flow cytometric profiles of Hela cells pre-treated for 2 days with IFN-γ, TNF-α, IFN-γ+TNF-α, or aCD4S, followed (or not) with 4 Gy γ-irradiation. The percentage of cells in G0/G1, G2/M or S-phase of the cell cycle is indicated under each curve. These experiments were repeated at least 2 times.