Correction to: Immunology and Cell Biology advance online publication, 28 October 2008; doi:10.1038/icb.2008.76 Due to a typesetting error, Figure 2 in the above paper appeared incorrectly. The correct figure is shown below. The typesetters would like to apologize for this mistake. Response of CD3+ CD4+ CD69+ T-cells non-stimulated (NS) or co-cultured with polyclonal stimulation (Staphylococcus aureus enterotoxin B (SEB)). Dot plot analysis representative of 1 out of 21 studied subjects showing the phenotype distribution (a) and cytokine secretion (b). Comparison of cytokine secretion in healthy donors (empty bars), indeterminate chagasic patients (gray bar) and chronic chagasic patients (black bars) (c). The results are shown as the average of the percentages of positive cells and respective standard error (s.e.m.). *Denotes statistical differences, P=0.03.