The permeability of blood-brain barrier (BBB) was detected by Evans Blue (EB) leakage method, and the ultrastruncture of BBB, which contained astroglia, was observed under electron microscopy.

伊文(EB)出法检测血脑屏障(BBB)通透性。透射镜观察星形胶质细胞在内的BBB超变化。