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Effect of TGF-β1 on the morphology of SHED. (A) Control SHED, exposure to (B) 0.1 ng/ml TGF-β1, (C) 0.5 ng/ml TGF-β1, (D) 1 ng/ml TGF-β1, (E) 5 ng/ml TGF-β1 and (F) 10 ng/ml TGF-β1 for 5 days. One representative morphologic picture of cells was shown.
