library_construction_protocol: Two mm SC sections, including the lesion site plus additional rostral and caudal tissue proximal to the lesion, were collected from mstnb mutants and wild-type siblings at 1 wpi. Uninjured mstnb mutants and wild-type SCs were also  collected. Total RNA was prepared using NucleoSpin RNA Plus XS (Clontech, cat# 740990) TruSeq libraries were prepared and sequenced on Illumina HiSeq 3000 using 50 bp paired-end reading strategy.