Fig. 1From: Simultaneous occurrence of fibrillary glomerulonephritis and renal lesions in nonmalignant monoclonal IgM gammopathyLight microscopic features of membranoproliferative glomerulonephritis. (a) The mesangium is expanded and the glomerular capillary walls appear thickened (periodic acid-Schiff). (b) Glomerular capillary walls exhibit thickened and segmental double contours (methenamine silver)Back to article page