The thymic medulla provides a unique milieu for the induction of T cell tolerance. New work now provides a first glimpse of how thymocytes scan this microenvironment and thus maximize their chances of encountering self antigen.
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Klein, L. Dead man walking: how thymocytes scan the medulla. Nat Immunol 10, 809–811 (2009). https://doi.org/10.1038/ni0809-809
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DOI: https://doi.org/10.1038/ni0809-809
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