We found that CD11c+ dendritic cells (DCs), Gr1+ neutrophils, and GL3+ γδT cells—but not CD4+ T cells, CD8+ T cells or Mac2+ macrophages—were IL-1Ra–producing EGFP+ cells in the lesions of aortitis (Fig. 3a, and data not shown). Here, ITGAX is linked to aortitis.