Fig. 2From: Atypical anti-glomerular basement membrane disease with anti-GBM antibody negativity and ANCA positivity: a case reportLight microscopy. a, Hematoxylin and eosin (HE) staining showed globally sclerotic glomeruli and the infiltration of inflammatory cells (× 100); b, Masson’s trichrome staining showed a large circumferential crescent (Masson × 200); c, The use of periodic acid-silver methenamine (PASM) stain identified the rupture of the glomerular basement membrane (GBM) and a small circumscribed crescent (× 200). Scale bars = 50 μmBack to article page