Primary sclerosing cholangitis displays distinct colonic mucosa topography yet a shared mast cell state with ulcerative colitis. - Tearle JL; Sviriaeva E; Zhang F; Jackson KJ; Kaye J; Tavakoli P; Koentgen S; Warren J; Liang RR; Malhotra P; Williams C; Haque A; et al. (Nature communications, 2026)