Assemblies of particles in the cell membranes of developing, mature and reactive astrocytes

摘要: Orthogonal arrays of small intramembranous particles characterize freeze-fractured astrocytic plasma membranes. The normal variation assemblies in membranes subpial processes mature and developing rats was established compared with reactive astrocytes. In rats, had the greatest number assemblies. As parenchyma approached, this decreased each successive layer processes. advent within membrane is a new criterion differentiation. foot astrocytes foetal began to acquire between day 19 20 continued postnatally by constant addition rearrangement contrast paucity deeper laminae brain, comprising lower lamellae glial scars an increased while most striking feature superficial, scar Although function these still unknown, it appears from our measurements that they are localized primarily outermost process progressively lesser degree underlying lamellae.