Figure 1.

(A) Axons (neurofilament, red) and astrocytes (GFAP, green) are seen at the border between the central and peripheral parts of the spinal cord at the site of replantation of the avulsed ventral root at 3 weeks after injury. In the more central parts astrocyte processes can be seen growing alongside axons (arrowheads) in a pattern that can also be found in the more peripheral parts where axons and astrocytic processess do align (arrows). Marked is also one single axon that seemingly grow from the central parts of the cord in to the peripheral nerve graft alongside astrocytic processess (asterisk*). Scale bar 50 μm. (B) Micrographs showing the relation between regenerating blood vessels, shown with marker for GLUT-1 (red), and regenerating axons, shown with marker for neurofilament (green), at the replantation site at 5 weeks after replantation of avulsed ventral roots. Note how blood vessels grow from the CNS compartment (arrows) to the PNS compartment (arrowheads) alongside the axons (green). Scale bar 50 μm.