Correction to: Nature Immunology https://doi.org/10.1038/ni.1631, published online 11 July 2008.

In the version of the article initially published, the lower left micrograph in Fig. 8c was incorrect and a duplicate of the left panel in Fig. 7d. The original imaging files have been retrieved, and the correct Fig. 8c is shown below as Fig. 1. This notice serves to amend the error.

Fig. 1
figure 1

Corrected Fig. 8c.

Full size image