Compared to the current controls, xylosyltransferase expression was increased as far as the synovialis in conjunction with hypercellular fibrosis, and the order of XT-I and XT-II expression in the tissue sequence below in AF patients was noted:\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$ V\kern0.48em >>\kern0.36em HYPR-F> HYP-F>S $$\end{document}V>>HYPR−F>HYP−F>S. The gene discussed is XYLT1; the disease is atrial fibrillation.