Cover legend: An image taken by deconvolution confocal microscopy showing the ensheathment of demyelinated injured axons of the spinal cord (Neurofilament 200, blue) by YFP (yellow fluorescent protein)-neural precursor cell-derived oligodendrocyte (green). The image clearly shows the oligodendrocyte morphology of one grafted neural precursor cell that extends its processes and forms myelin basic protein (red) around the injured axons. For details, see the article by Karimi-Abdolrezaee et al. in this issue (pages 3377–3389).