Scientific Reports 6: Article number: 30784; published online: 08 August 2016; updated: 10 October 2016.

In the Supplementary Information file originally published with this Article there was an error in Supplementary Figure 1b, where the y-axis “GFP” and x-axis “CD4” were inverted. These errors have been corrected in the Supplementary Information that now accompanies the Article.