Figure 4From: Chromatographic analysis of age-related changes in mucosal serotonin transmission in the murine distal ileumAlterations in the clearance and metabolism of 5-HT between 3 and 18 month old animals. In (a) responses for the ratio of intracellular 5-HIAA: extracellular 5-HT are shown, whilst in (b) intracellular 5-HIAA responses are shown. All results shown as mean ± S.E.M., where n = 6–7 and *p < 0.05.Back to article page