Tyrosine hydroxylase(TH) postive cells among these neurons were not detected.Conclusion Cells isolated from the ventral mesecephalon of human fetal have the common features of neural stem cells.

• 结论 从人胚中脑腹侧分离出的幼稚细胞具有一定的增殖和自我更新能力，有多向分化潜能，具备中枢神经系统干细胞的一般特征。