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Dex treatment had little effect on cell sensitivity to BMP-7. Cells were cultured in the control basic medium or basic medium supplemented with 100 nM Dex for 1 week. The cells were serum starved overnight. After 50 ng/mL BMP-7 was added into the cultures for 1 h, cell samples were collected for Western blot analysis of Smad phosphorylation.
