RA@BSA@Cur NPs promoted synaptic regeneration and less scar formation in vivo. Immunofluorescence staining and quantification analysis of NeuN + cells (a), CSPGs accumulation (b), Iba+ microglial cells (c), and synapsis remodeling (d). (n = 3 independent samples). Statistical differences were determined by using the ANOVA with Bonferroni's multiple comparison test (*p < 0.05, **p < 0.01, ***p < 0.001, ns: no significant; a.u. means arbitrary unit).