Figure 2. Serotonin and 5-HIAA levels in the ileal mucosa as measured using HPLC.
[A]: Summary for amount of serotonin and 5-HIAA in different age groups (n = 4 to 7). [B]: The 5-HIAA/serotonin ratio (serotonin turnover) was very low in neonates. Asterisks indicate statistic significance (One-way ANOVA with Bonferroni correction, n = 4 to 7).