SFI scores (a,b,c) vs. PO days and (d) paw prints for all PEG, NC, or sham-operated (sham) individual. SFI scores from 3d to 42d PO of all individual rats (see key and Table 2) receiving a PEG-fused (PEG) or Negative Control (NC) transection. HPEG = Historical + current PEG-fusion animals all using the current PEG-fusion protocol. HNC = Historical + current Negative Control animals all using the current Negative Control protocol. Note that animals sacrificed for morphometric analyses are no longer available to be behaviorally tested (a). SFI scores from all PEG and Negative Control individual rats tested from 0d–42d PO. Average ± SE SFI for animals used in this study (colored lines and points) and our historical average (black lines and points) for PEG-fused and Negative Control animals that received the same PEG-fusion protocol described herein. The two n values in the key for each curve gives the number of animals sampled at 3d–42d PO and the number animals that continued to be sampled at 49d –84d PO, respectively. Vertical bar marks 42d PO for which vertical bars and asterisks at right of graphs bars show p value comparisons *,**,*** = p < 0.05, 0.01, and < 0.001, respectively; ns = not significant (p > 0.05). p values in other figures use the same asterisk and ns symbolic designations.