RT Journal Article SR Electronic T1 “That’s not helping”–T follicular helper cells drive skin fibrosis JF Science Immunology JO Sci. Immunol. FD American Association for the Advancement of Science DO 10.1126/sciimmunol.aat6417 VO 3 IS 22 A1 Clark, Rachael A. YR 2018 UL http://immunology.sciencemag.org/content/3/22/eaat6417.abstract AB T follicular helper–like cells and IL-21 are drivers of skin fibrosis in systemic sclerosis.