Fig. 3
No electron-dense deposits are observed under electron microscopy. a Abundant plasma cells (× 2000) infiltrated in renal interstitium. b Detachment and partial atrophy of the microvilli of renal tubular epithelial cells as well as edema, infiltration of lymphocytes/monocytes, and fibrosis in renal interstitium. There are no electron-dense deposits in the glomeruli (× 2000). c Proliferation of glomerular mesangial cells and interstitial cells (× 2000). d Diffuse and irregular thickening of basement membrane (× 12,000)