Fig. 3From: Opposing effects of antibiotics and germ-free status on neuropeptide systems involved in social behaviour and pain regulationEffects of post-weaning antibiotic treatment on the gene expression of MyD88. Data are plotted as mean expression (relative to the control group) ± SEM for MyD88 (encoding myeloid differentiation factor 88) and all comparisons are with n = 8 per group. Two-sample t-tests have 14 degrees of freedom (df) and asterisks denote P < 0.05Back to article page