Changes of cerebral blood flow (CBF) monitored by laser Doppler flowmetry (LDF). (A) Changes in CBF in rats infused with different doses of cells. CBF is reduced as the cell dose is increased. *P <0.05 compared to PBS group. (B) Changes in CBF in rats infused with different volumes and in different time spans. #
P <0.05 compared with the 0.5 ml/3 minute group.