Schematic diagram of the protocol. (A) Composition of the bovine milk oligosaccharides (BMO) extract used in the study, (B) composition of the diets, (C) protocol outline. Hex: glucose or galactose, GlcNAc: N-acetyl glucosamine, NeuAc: sialic acid, C: control diet, WD: Western diet, WD+BMO: WD enriched with BMO. B. infantis = Bifidobacterium longum ssp. infantis. Fuc = fucose. Color version available online.