The authors inadvertently published histograms in the fourth panel to the right in both rows of Figure 4c that were actually the data of CD8+NKT cells from EBV-exposed CD8+ NKT cell-transferred, or EBV-exposed CD4 + and CD8 + NKT-transferred hu-thym-SCID chimeras.The corrected figure included here contains the histograms that correctly represent the data of T ceils from EBV-exposed CD4+ and CD8+NKT-transferred hu-thym-SCID chimeras.Since the fourth panels to the right in both rows of Figure 4c show the cellular proliferation using the CFSE labeling technique, the histogram substitutions do not alter the conclusions that were drawn from the original data.The authors would like to apologize for their mistake.