Mean percent change (±SEM) of NR1 in lateral FPI rats in hippocampus (A) on post-injury day (PID) 1, 2, 4, and 7 as compared to age-matched shams (defined as 0%), with representative immunoblots of pooled sham and lateral FPI ipsilateral hippocampal synaptoneurosomes at PID1, PID2, PID4, and PID7 (B). No overall main effects of injury were detected for any region. For abbreviations, see legend to Figure 1.