Retraction Note to: Cell Tissue Res https://doi.org/10.1007/s00441-014-1797-9

The Editor-in-Chief has retracted this article [1] because there appear to be numerous duplications within Figs. 2, 3, 5 and 6. Due to these duplications, the Editor-in-Chief no longer has confidence in the data and subsequent conclusions drawn from them.

Huayu Wu agrees to this retraction. Li Zheng agrees with the retraction but does not does not agree with the wording. Pan Jin does not agree with the retraction. Guojie Xu and Jinmin Zhao have not responded to any correspondence from the publisher about this retraction.