NewslettersImmune Regulation NewsGut Microbiota Promotes Stem Cell Differentiation through Macrophage and Mesenchymal Niches in Early Postnatal DevelopmentBy Laurisa Dohm - December 9, 20220487Mouse genetic and organoid co-culture experiments demonstrated that a CD206+ subset of intestinal macrophages secreted Wnt ligands, which maintained the mesenchymal niche cells important for Paneth cell differentiation.[Immunity]AbstractGraphical Abstract