Panel A: Treatment with PTX, GT3 and GT3 in combination with PTX improved colony-forming units from bone marrow harvested 24 h after 8.5 Gy TBI. Combination therapy was significantly more effective than PTX or GT3 only (P = 0.005 and P = 0.005, respectively). Six mice per group from a single experiment (means ± SEM). Panel B: Treatment with PTX, GT3 and GT3 in combination with PTX improved spleen colony counts 10 days after TBI (8.5 Gy). Combination therapy was significantly more effective than PTX or GT3 only (P = 0.005 and P= 0.005, respectively). Six mice per group from a single experiment (means ± SEM). Panel C: Compared to treatment with GT3 only, combination therapy significantly improved platelet recovery at day 14 postirradiation (8.5 Gy) (P = 0.05). Six mice per group from a single experiment (means ± SEM).