Martha S. Jordan et al.

Nature Immunology 2, 301–306 (2001).

In the April issue of Nature Immunology the sentence beginning on line 11 of the Discussion was printed incorrectly. It should read: “In addition, thymocytes that bear the TS1(SW) TCR—whose intrinsic affinity for the S1 peptide is 1% that of the 6.5 TCR—did not develop into CD25+ T cells, even in mice in which the S1 peptide induced deletion of the 6.5 TCR.”