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A: treatment with phosphotidylcholine/phosphatidylserine (PC/PS) mixture (100 μM) or transforming growth factor-β1 (TGF-β1; 1 ng/ml) for 14 h increases caveolin-1 protein in the buoyant fractions of SK1-HK-2 cells. B: densitometric quantifications of relative band intensities from buoyant fractions (layers 2–4) are shown (n = 3). *P < 0.05 vs. vehicle. Means ± SE. Confluent SK1-HK-2 cells grown in 10-cm plate were processed for each experiment.
