Correction to: Nature Communications https://doi.org/10.1038/ncomms8743, published online 24 July 2015.

This article contains an error in Fig. 3g. The image in the Ctrlsh+TGF-β ligand panel was inadvertently duplicated from the image in the MEG3sh panel. The correct version of this figure appears below as Fig. 1.

figure 1

Fig. 1