Figure 2. Complement components MBL and properdin were detected on frozen renal tissues from patients with anti-GBM disease by immunofluorescence (magnification ×400).

A: MBL diffusive granular deposition on the glomerular capillary wall, mesangial region and crescent in the glomeruli (Patient #4); B: properdin linear deposition along the capillary wall (Patient #10); C: MBL were negative in the renal tissues from patients with minimal change disease; D: Properdin was negative in the renal tissues from patients with minimal change disease.