Pro-inflammatory cytokines \documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$TNF-\alpha $$\end{document}TNF−α, IL-1, IL-6, granulocyte macrophage colony stimulating factor (GM-CSF), and chemokines IL-8 are abundant in patients with rheumatoid arthritis (RA)79. Here, CXCL8 is linked to rheumatoid arthritis.