FABP6 and Salmonella Infections: In contrast, the expression of other known intestinal FXR target genes, Fabp6 (Fatty acid binding protein 6), Nr0b2 (Small heterodimer partner, Shp) [26] and Osta (Organic solute transporter alpha) [27], was decreased by Salmonella infection in a pattern similar to that of Fgf15 with maximal, significant drops in highly-infected animals (Figure 3A).