Surface biotinylation of spinal cord slices under basal condition demonstrates unchanged GluA1 and GluA2 surface level upon Tat-P4-(C5)2, Tat-C5 peptides incubation compared to the untreated condition (CTR). Densitometric analysis of immunoblots show that the reduction in mean surface for GluA2 in not significant (graph show mean +/- SEM and individual points, One-way ANOVA followed by Dunnett´s multiple comparisons test, n=5/group as indicated by individual values). 