Immunostaining with a specific antiserum against murine fibrinogen/fibrin of kidney sections taken in the outer cortex (I) or in the medulla (II) (original magnification ×400) from ₂-AP^+/+ mice before (A) or 4 hours after endotoxin injection (B), and from ₂-AP^−/− mice 4 hours after endotoxin injection (C). The arrows indicate some of the fibrin deposits in the glomeruli (IB) and in the capillaries (IIB and IIC). The scale bar corresponds to 50 μm.