Figure 6From: Vasculitis: mechanisms involved and clinical manifestationsComparison of maintenance therapy with cyclophosphamide (grey line) or azathioprine (black line) in ANCA-associated vasculitis. ANCA, anti-neutrophil cytoplasmic antibody. Reproduced with permission from Jayne et al. N Engl J Med 2003 © 2003 Massachusetts Medical Society [49].Back to article page