Correction to: Nature Immunology https://doi.org/10.1038/ni913, published online 24 March 2003.

In the version of this article initially published, the image in the upper left panel of Fig. 1d (Vector) was incorrect. The correct panel is shown below (Fig. 1). The data, results and conclusions remain unaffected. Due to the age of the article, the figure panel in this amendment serves to update the article.

Fig. 1
figure 1

Corrected Fig. 1d. Upper left panel. Brightfield incandescent image of T8.1 cells transfected with a vector.