Fig. 5From: Effects of chronic noise exposure on the microbiome-gut-brain axis in senescence-accelerated prone mice: implications for Alzheimer’s diseaseChronic noise exposure produces abnormalities in serum neurotransmitters and chemokines in SAMP8 mice. a–c Enzyme-linked immunosorbent assay analysis of GABA, 5-HT, and endotoxin (ET) concentrations for each group (n = 6). d Heatmap showing the expression values of 40 serum cytokines measured by protein array (n = 4). e Normalized net intensities of cytokines showing significant intergroup changes in the protein array (n = 4). Data are shown as the mean ± standard deviation. HN high-intensity noise exposure, LN low-intensity noise exposureBack to article page