Additional file 2.

Figure S2. Renal TMA identified by light microscopy and C4d staining on renal vessels. (A-C)Thrombotic microangiopathy superimposed on lupus nephritis: (A) Glomerular endocapillary hypercellularity with intraluminal thrombus (Masson's trichrome ×400). (B) Thrombosis in interlobular arteriole (Periodic Acid-Silver Methenamine and Masson's trichrome ×400) (C) The thickened arteriole with swelling of endothelial cells and intimal fibrosis (Periodic Acid-Silver Methenamine and Masson's trichrome ×400). (D) C4d is positive beneath the vascular endothelium and within the basement membrane around the medial myocytes in patient with lupus nephritis (Original magnification ×400).

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Song et al. Arthritis Research & Therapy 2013 15:R12   doi:10.1186/ar4142