Table 1. Dose effect of SP on stem cell mobilization and cytokine secretion. SP was injected to rat in dose of 0.05, 0.5, 5, and 50 nmole/kg, respectively. At 4.5h and 24h post SP, peripheral blood was collected and then, cytokine secretion was examined by ELISA and stem cell mobilization was detected by CFU-f and CFU-e