Biodistribution of SAP and NPC along injured spinal cord. SAP labelled with FITC was injected immediately after spinal cord injury. NPC labelled with DSred were transplanted 2 weeks after injury. DAPI was used to stain cell nuclei blue. Spinal cord was perfused at 4 weeks post-injury. SAP and NPC were found rostral and caudal to injured cord segment. Scale bar: 600 μm.