Peripheral blood hematocrit (%) (A), leukocyte (B), and platelet (C) counts in lethally irradiated mice transplanted with unprimed (control) donor cells (□), donor cells that were cytokine stimulated, frozen, and then thawed (S/F/T) (◊), or cells that were frozen, thawed, and then cytokine stimulated (F/T/S) (○) before transplantation. Leukocyte counts are absolute per μL, platelet counts are (×10⁶/μL). Data are pooled from two independent experiments each with 5 to 10 mice/group.