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Expression of Bmp2 and Col1 in each group during the differentiation of transfected OLCs. mRNA expression of Bmp2 (A) and Col1 (C) were investigated by Real-time PCR analysis. Protein expression of Bmp2 (B, B’) and Col1 (D, D’) were detected by Western-Blot. (E) β-actin served as an internal control. *Indicates statistical difference between the test group and the control P < 0.05.
