Alport syndrome

Electron micrograph from a patient with Alport syndrome shows the characteristic thickening, fraying, and laminations (arrow) of the GBM.

Electron micrograph of a normal glomerular capillary loop showing the fenestrated endothelial cell (Endo), the glomerular basement membrane (GBM), and the epithelial cells with its interdigitating foot processes (arrow). The GBM is thin, and no electron-dense deposits are present. Two normal platelets are seen in the capillary lumen.