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PP2A/B′β accelerates cell cycle arrest by NGF. (A) PC12 cells were induced to express B′β (2 days with or without Dox) and then stimulated with 10 ng/ml NGF for 0, 2, and 4 days, and cell cycle profiles (representative histograms) were obtained by flow cytometry. (B) Summary graph plotting percentages of dividing cells (G2 + S phase; means ± standard errors of four independent experiments). *, P < 0.05.
