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S6K in PDGF-induced tube formation. A: expression of dominant-negative S6K (S6K-DN) in stable cells. B: inhibition of S6K activity by S6K-DN mutant. C: tube formation in stable cells in response to PDGF. D: quantification of tube formation. In this figure, all experiments were repeated 3 times with consistent results. Each data point represents mean ± SE (n = 3 experiments).
