(G) Spine density in DiOlistically labeled prefrontal cortex (PFC) is similar in WT and crmp2-/- mice in both juvenile and adult mice. Scale bars: 5 μm. (H) Quantification of dendritic spine density of PFC pyramidal neurons, basal dendrites (WT, juvenile: 8.63±1.44 spines/10 μm, adults: 7.3±1.4; crmp2-/-, juvenile: 9.05±1.73, p=0.97, adults: 6.98±1.53, p>0.99), mean ± SD, 2-way ANOVA with Bonferroni's multiple comparisons test. P25: n=3, ≥50 dendrites; adults: n=3, ≥50 dendrites. 