Retraction to: Cellular and Molecular Bioengineering, Vol. 8, pp. 285–295 (2015) https://doi.org/10.1007/s12195-015-0386-7

The authors are retracting this article because of anomalies in two figures: specifically, the β-actin bands for TGF-β1 and COL1A1 in Fig. 2 closely resemble the β-actin bands in Fig. 3(a). The original data files for these figures are no longer available.

All authors agree with this retraction.