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A helpers' guide to infection

Killer T cells were thought to patrol the body unhindered, freely gaining access to sites of infection. But it seems that, at least in some body tissues, helper T cells must pave the way for killer T-cell entry.

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Figure 1: Model of assisted entry.


  1. *This article and the paper under discussion3 were published online on 8 November 2009.


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Gebhardt, T., Carbone, F. A helpers' guide to infection. Nature 462, 418–419 (2009).

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