Multilineage chimerism following haploidentical BMT with a conditioning regimen of ⁹⁰Y-anti-CD45 RIT, TBI, and/or CY. Individual and mean percentages of (A) CD3⁺ (T cells), (B) B220⁺ (B cells), or (C) CD11b⁺ (myeloid cells) expressing the H-2D^d haplotype in peripheral blood from transplanted mice 28 days after BMT. Recipient mice were treated with 100 or 300 µCi ⁹⁰Y-DOTA-30F11 on day −4 or 200 or 1000 cGy TBI on day 0 and with CY (200 mg/kg per day on days −2 and +2).