Combined pretreatment with KGF + PFT-β additively restores numbers of total and naive CD4⁺ and CD8⁺ T cells in LN by 6 weeks after allogeneic BMT. Lethally irradiated CB6F1 recipients of allogeneic (BALB/c) BM were left untreated (BMT Control) or pretreated with KGF, PFT-β, or KGF + PFT-β and analyzed for the presence of T cells in the LNs at 6 weeks after BMT alongside unmanipulated age-/sex-matched CB6F1 controls (non-BMT Control). Mean absolute numbers ± SEMs of (A) total CD4⁺CD3⁺ T cells, (B) naive (CD62L^highCD44^low) CD4⁺ T cells, (C) total CD8⁺CD3⁺ T cells, (D) naive (CD62L^highCD44^low) CD8⁺ T cells, and (E) CD4⁺CD3⁻CD11c⁻B220⁻ Lti cells in the LNs are shown. LN cells were pooled from inguinal, axillary, and mesenteric LNs. Data are representative of 2 experiments, each with 4 mice per group; *P < .05.