On the cover: Tissue segmentation (red, bile ductules; green, portal), nuclear boundaries (dark green), and cell phenotypes (circles: CD4⁺AhR⁺, blue; CD4⁺AhR⁻, red; CD4⁻AhR⁺, green; CD4⁻AhR⁻, yellow) determined by InForm algorithmic analysis of immunohistochemistry performed on an explanted liver tissue section from a primary sclerosing cholangitis liver. Jeffery, H. C., S. Hunter, E. H. Humphreys, R. Bhogal, R. E. Wawman, J. Birtwistle, M. Atif, C. J. Bagnal, G. Rodriguez Blanco, N. Richardson, S. Warner, W. B. Dunn, S. C. Afford, D. H. Adams, and Y. H. Oo. 2019. Bidirectional cross-talk between biliary epithelium and Th17 cells promotes local Th17 expansion and bile duct proliferation in biliary liver diseases. J. Immunol. 203: 1151–1159.