Figure 2B was presented incorrectly on p. 134. The authors mistook myeloid cells for T cells and failed to correct the sum of myeloid, B and T cells into 100%. The corresponding description in the text (pp. 133–134) should read as follows: Percentage of human CD11b+ myeloid cells in PB increased at the expense of CD19 + B cells and CD3 + T cells during the latter 12 weeks and irradiation significantly enhanced these changes (Figure 2B). The correct Figure 2B is shown below. This change does not affect any of the results or conclusions of our study.