Numbers of animals used for each experiment.

Times in the top row are in days (d), weeks (w) or year (yr) after spinal cord transection (TX). Ctrl, control; Tot, total; IHC, immunohistochemistry; MO, morpholino antisense oligonucleotide. In the 4-week experiment, a single dye (DAF 488, green) was applied to a complete TX 4 weeks after, and 1 cm caudal to an unlabeled hemisection (hemi-TX) to look for axon collaterals crossing the midline. In the 5-week experiment, one dye (DMTR, red) was applied to a hemisection, and then 4 weeks later, a second dye (DAF 488, green) was applied to a complete TX 1 cm caudally.Numbers of animals used for each experiment.