Heat map diagrams of differentially expressed genes in the small intestine upon Western diet feeding. A: Standard scores of differentially expressed genes related to cholesterol metabolism (GO Biological Processes: cholesterol metabolic process, cholesterol biosynthetic process, cholesterol transport, cholesterol homeostasis, positive regulation of cholesterol efflux, regulation of cholesterol efflux, cholesterol efflux, regulation of cholesterol metabolic process, regulation of cholesterol storage, regulation of cholesterol biosynthetic process, reverse cholesterol transport). B: Standard scores of differentially expressed genes related to PL metabolism (GO Biological Processes: PL metabolic process, PL biosynthetic process, PL catabolic process, PL efflux, PL transport). Capital letters indicate: C, control; W, Western diet. Differentially expressed genes with a q-value ≤ 0.05 were included in the analysis. Green and red indicate down- and up-regulation of gene expression, respectively.