Abstract
Following the publication of this article, the authors noted the following error:
Figure 4E (Bar graph illustrating total density of GFAP astrocytes) is to be replaced by the following graph. The original bar graph submitted is for the density of VEGF (vascular endothelial growth factor) + GFAP (glial fibrilliary acidic protein) cells and not for the total density of GFAP cells.
The original graph was inadvertently submitted for publication. The changing of the graph does not change any text in the publication or any other data or graphs already published. The change also does not influence the interpretation or the conclusions of the paper. The authors regret the error.
