Fig. 3

Relative gene expression in the intestine of gilthead seabream fed different experimental diets. a Interleukine-1β (il1β); b Interleukine-6 (il6); c Cyclooxigenase-2 (cox2); d Intestinal Mucin (imuc); e Immunoglobulin M (igm). f Occludin (ocl); g Alkaline Phosphatase (alp); h Trypsin (tryp); i Peptide Transporter 1 (pept1). Bars represent relative gene expression (mean + standard error, n = 9), for each group, in the foregut (FG, black bars) and the hindgut (HG, grey bars). Superscript letters on the bars indicate differences between experimental groups in each section, at p < 0.05. Asterisks indicate differences between intestinal sections in each experimental group, at p < 0.05. Capital letters at the top of the graph indicate differences between experimental groups, regardless the intestinal section (n = 18, p < 0.05), when interaction between factors (diet and section) is not significative (Table 5)