Percentage of MafB+ cells in MPPs, % of MEPs, and granulocyte monocyte progenitors (GMPs) in TBM cells isolated from bilateral femurs in mice. A: y-axis: % of MafB+ cells in MPPs; x-axis: time course after burn, PBD3, PBD7, and PBD14. B: y-axis: number of MEPs ×103 per million of MPPs; x-axis: time course after burn, PBD3, PBD7, and PBD14. C: number of GMPs ×103 per million of MPPs. Propranolol at 1.2 mg/mouse per day was delivered subcutaneously for PBD3 and PBD7. For longer duration (PBD14), alzet pumps were implanted subcutaneously in mice for continuous infusion of propranolol at 5 mg/kg body wt per day. Bar graphs represent means ± SE. Data were obtained from 8 mice (TBM from 2 mice pooled in one)/group and repeated 3 times. *P < 0.05, **P < 0.01, ***P < 0.001; a vs. sham; b vs. burn by one-way ANOVA.