Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Far2736/MediaObjects/13075_2009_Article_2576_Fig1_HTML.jpg)
Glomerular microthrombi in the renal biopsy specimens of a patient. (a) Fibrin microthrombi stained red (black arrow; hematoxylin and eosin stained). (b) Fibrin microthrombi stained red (red arrow; Masson's trichrome stained). (c) Fibrin microthrombi stained purple (black arrow; periodic acid-Schiff stained). (d) Fibrin microthrombi stained dark brown (red arrow; periodic acid-silver methenamine stained). (e) Microthrombi containing fibrin/fibrinogen within the glomerular capillary lumen (white arrow; direct immunofluorescent staining of fibrinogen). Magnification: ×400.