Quiz Page American Journal of Kidney Diseases Alexandre Cez, MD, Louise Galmiche, MD, PhD, Aurélie Hummel, MD, Bertrand Knebelmann, MD, PhD, Khalil El Karoui, MD, PhD  American Journal of Kidney Diseases  Volume 63, Issue 4, Pages A17-A20 (April 2014) DOI: 10.1053/j.ajkd.2013.09.023 Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions

Figure 1 Kidney biopsy. Light microscopy. Masson trichrome stain: (A) original magnification, ×100; (B) original magnification, ×400. American Journal of Kidney Diseases 2014 63, A17-A20DOI: (10.1053/j.ajkd.2013.09.023) Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions

Figure 2 Kidney biopsy. Light microscopy. Congo Red stain; original magnification, ×400. American Journal of Kidney Diseases 2014 63, A17-A20DOI: (10.1053/j.ajkd.2013.09.023) Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions

Figure 3 Kidney biopsy. Light microscopy under polarized light. Congo Red stain; original magnification, ×400. American Journal of Kidney Diseases 2014 63, A17-A20DOI: (10.1053/j.ajkd.2013.09.023) Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions

Figure 4 Kidney biopsy. Immunofluorescence study with antibody against fibrinogen; original magnification, ×400. American Journal of Kidney Diseases 2014 63, A17-A20DOI: (10.1053/j.ajkd.2013.09.023) Copyright © 2014 National Kidney Foundation, Inc. Terms and Conditions