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Alveolar epithelial cells (AEC) inhibit transforming growth factor-β (TGF-β)-stimulated expression of α-smooth muscle actin (αSMA). Cells were cultured as in Fig. 6 with 1 mg/ml BSA and harvested on day 5 of culture. αSMA expression was measured by Western analyses. The image is from 1 of 3 independent experiments. In these experiments, alveolar epithelial cells decreased the expression of TGF-β-stimulated αSMA by 27 ± 6%.
