Myd88−/− neurons display reduced type-1 interferon load and signalling in response to Aβ1-42 insult. Wildtype and Myd88−/− primary cultured murine mixed cortical and hippocampal neuronal cultures were treated with 2.5 μM Aβ1-42 for 24 to 72 h. (A) IFNα and (B) IFNβ mRNA levels were analysed by Q-PCR (*p < 0.05, n = 5 to 6, unmatched two-way ANOVA, Bonferroni post hoc test). (C) STAT-3 tyrosine 705 phosphorylation of whole cell extracts was measured by Western blot. (D) Corresponding densitometry (*p < 0.05, n = 5, unmatched two-way ANOVA, Bonferroni post hoc test). For densitometry calculations, phosphorylation intensity was measured in arbitrary units (A.U.) and normalised to the STAT-3:β-actin intensity ratio. All graphical data is displayed as mean ± SEM with treatment time on the x axis. Full-size uncropped Western blots can be viewed in Additional file 4: Figure S2.