Human milk oligosaccharide mediates mutualism between Escherichia coli and Bifidobacterium bifidum. - Seki D; Pollak S; Kujawska M; Kiu R; Acuna-Gonzalez A; Crouch LI; Bakshani CR; Chivers PT; Mommers M; van Best N; Penders J; Hall LJ (Nature communications, 2026)