Clonal deletion of donor- and host-reactive T cells in chimeric NOD recipients. Peripheral blood mononuclear cells (PBMNCs) from control FVB/N and NOD mice were stained with anti-TCRαβ versus anti-Vβ6, Vβ17, or Vβ10. The PBMNCs from long-term (> 24 weeks after BMT) chimeric recipients were stained with anti–H-2^q, TCRαβ plus anti-Vβ6, Vβ17, or Vβ10. Donor-type (H-2^q+) and host-type (H-2^q-) TCRαβ⁺ cells were gated and then shown in TCRαβ versus Vβ6, Vβ17, or Vβ10. The percentage of H-2^q+ and H-2^q- TCRαβ⁺ cells among PBMNCs was shown in the gating boxes. The percentage of Vβ6⁺, Vβ17⁺, and Vβ10⁺ T-cell subsets among total T cells were shown above the gating boxes. One representative of 4 measured recipients is shown.