Figure 3.

a, Quantitative PCR analysis of CD68 mRNA expression in the neonatal and adult rat dorsal horn over time after SNI relative to age-matched controls and uninjured animals, respectively. b, c, CD2 (b) and CD3 (c) transcripts increase successively over time in the adult rat dorsal horn relative to uninjured animals, but do not change in the neonatal dorsal horn relative to age-matched controls. Data are expressed as mean fold ± SEM. *p < 0.05, one-way ANOVA, Student's t test, n = 4 per group.