A. Representative immunoblot of cortical tissue ipsilateral to injury from CCI (C) and SHAM (S) rat pups at day 1 after injury showing the intact Alpha II Spectrin band as well as the 150 kDa SBDP (150 SBDP), 145 kDa SBDP (145 SBDP), the 120 kDa SBDP (120 SBDP) and tubulin bands. B. Graphs B, C and D represent the immunoblot results for 150, 145 and 120 SBDPs, respectively. For all graphs, data for immature rat pup cortex ipsilateral to injury is expressed as a percent of SHAM values at post injury days (PID) 1, 2, 3, 5, 7 and 14 after CCI. The dotted line shows the value corresponding to 100% SHAM. N=6/group and * p<0.05. CCI increased 150 SBDPs relative to SHAM values in the ipsilateral cortex at PID 2. C. CCI increased 145 SBDPs relative to SHAM values in the ipsilateral cortex at PID 1 and 2. D. CCI increased 120 SBDPs relative to SHAM values in the ipsilateral cortex at PID 2.