Fig. 1.

CXCL12 levels assessed in the spontaneous and treated conditions. a A brain slice showing the minipump tubing tract and cell graft. b The CXCL12-positive particles surrounding cells were counted. For the CXCL12-treated group, CXCL12 immunoreactivity was significantly elevated at the infusion site after 1 day of infusion and increased further after 3 days. c CXCL12 infusion caused significant immunoreactivity nearby the infusion site. d Little immunoreactivity was observed at the graft site. The spontaneous and treated groups contained six rats each