DATA SOURCES:We searched Medline for English articles from January 1997 to August 2003 with stem cell,neural stem cell,bone marrow stromal cell,stroke,ischemic injury,nervous system disease,and neurotrophic factor as the keywords.

• 资料来源:应用计算机检索Medline数据库1997-01/2003-08期间的文章,检索词为stemcell,neuralstemcell,bonemarrowstromalcell,stroke,ischemicinjury,nervoussystemdisease,neurotrophicfactor”分别组合进行检索,限定文章语言种类为英文。