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Ciccia F, Alessandro R, Rizzo A, et al. IL-33 is overexpressed in the inflamed arteries of patients with giant cell arteritis. Ann Rheum Dis 2013;72:258–64. Images in figures 1F and 2C of this paper were identical. The correct figure 1 is given below.

Figure 1

Interleukin (IL)-33 expression in temporal arteries of patients with giant cell arteritis (GCA). Representative photomicrographs showing 5-μm-thick paraffin-embedded sections of artery biopsy specimens obtained from controls (A) and patients with GCA (B-F), stained for IL-33. IL-33 expression was observed in inflamed arteries displaying small vessel vasculitis (SVV) (B) and transmural inflammation (C). In SVV IL-33 expression was observed among infiltrating mononuclear cells (arrows) and smooth vascular muscle cells (B). In arteries displaying transmural inflammation IL-33 expression was observed among infiltrating inflammatory mononuclear cells (D) and giant cells scattered through the inflamed wall of inflamed arteries (E). Microvessels distributed through the inflammatory infiltrates also showed intense IL-33 positivity (arrows) (F). (A, original magnification ×100; B-C, original magnification ×250; D-F, original magnification ×400).

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  • Correction
    BMJ Publishing Group Ltd and European League Against Rheumatism
  • Basic and translational research
    Francesco Ciccia Riccardo Alessandro Aroldo Rizzo Stefania Raimondo AnnaRita Giardina Francesca Raiata Luigi Boiardi Alberto Cavazza Giuliana Guggino Giacomo De Leo Carlo Salvarani Giovanni Triolo