a trend toward significancep = 0.055
Bonferroni post hoc analyses indicated that, compared to the GFP (KO) group, spines in the I304N and ΔRGG groups had significantly greater average head diameter ( p < 0.0001 and p < 0.001, respectively), and there was a trend toward significance for wtFMRP spines to be of greater head diameter than GFP (KO; p = 0.055).