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Effect of integrin β1 knockdown on osteogenic activity PDLSCs. a Cells were transfected with integrin β1-specific siRNA, and (a) the protein levels of integrin β1, (b) ALP activity, and (c) intracellular calcium levels were assessed after 4 days of osteogenic induction. A representative result from five independent experiments is shown. * P < 0.05 vs. control value
